CN114520458A - Device and method for switching and outputting continuous light and pulse light - Google Patents

Device and method for switching and outputting continuous light and pulse light Download PDF

Info

Publication number
CN114520458A
CN114520458A CN202210066093.2A CN202210066093A CN114520458A CN 114520458 A CN114520458 A CN 114520458A CN 202210066093 A CN202210066093 A CN 202210066093A CN 114520458 A CN114520458 A CN 114520458A
Authority
CN
China
Prior art keywords
polarized light
semi
laser
mirror
reflection mirror
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210066093.2A
Other languages
Chinese (zh)
Other versions
CN114520458B (en
Inventor
李立
白冰
高正欣
王宝库
许祺峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Engineering University
Original Assignee
Harbin Engineering University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harbin Engineering University filed Critical Harbin Engineering University
Priority to CN202210066093.2A priority Critical patent/CN114520458B/en
Publication of CN114520458A publication Critical patent/CN114520458A/en
Application granted granted Critical
Publication of CN114520458B publication Critical patent/CN114520458B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/10061—Polarization control
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
    • H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
    • H01S3/1024—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping for pulse generation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

The invention discloses a device and a method for switching and outputting continuous light and pulse light, which consists of a folded laser cavity and a self-injection cavity, and sequentially comprises a 1.9 mu m horizontal line polarization continuous light laser, a first optical switch, a resonant cavity input cavity mirror, a Brewster mirror, a Ho, a LLF laser crystal, a 2 mu m semi-transmission semi-reflection mirror, a half-wave plate, a first total reflection mirror, a second optical switch, a second total reflection mirror, an optical delayer, a third total reflection mirror, a first optical attenuator and a resonant cavity output coupling mirror; the invention can realize the switching of linear polarized continuous laser and pulse laser by a single laser, and reduce the cost of laser devices. The accurate signal control master switch can realize the accurate real-time switching of continuous laser and pulse laser, namely can adjust according to the demand by oneself. The invention can respectively output two beams of laser with mutually vertical polarization, and can switch between continuous horizontal light and pulse vertical light at any time according to requirements.

Description

Device and method for switching and outputting continuous light and pulse light
Technical Field
The invention belongs to the technical field of laser, relates to a device and a method for switching and outputting continuous light and pulse light, and particularly relates to a device and a method for switching and outputting continuous light and pulse light based on self-injection.
Background
The continuous laser can output laser for a long time, and can be widely applied to the fields of laser communication, laser surgery and the like. Although the pulse laser can work at certain time intervals, the pulse laser has larger output power and peak power, and can be widely applied to the fields of laser marking, cutting, distance measurement and the like. It follows that continuous lasers and pulsed lasers play a great role in the civilian field. At present, solid lasers, fiber lasers, semiconductor lasers and the like can easily realize high-power continuous lasers, and the generation of huge pulses can be realized by adopting Q-switching technologies (such as active Q-switching technologies, passive Q-switching technologies and the like) on the basis, but the realization of real-time switching of continuous lasers and pulse lasers by a single laser is still rare.
The laser with the wave band of 2 mu m is not only positioned in a low-loss window of atmospheric light transmission, but also can be applied to coherent Doppler wind-finding radars and laser radar system light sources. In addition OH-The band has strong absorption, and the thermal effect of the laser can vaporize human tissues to generate a coagulation effect, so that the laser scalpel can be used as a scalpel to be applied to the field of laser medicine. However, depending on the application scenario, a 2 μm band laser needs to be switched between continuous wave and pulsed in real time.
Research into switching between continuous light and pulsed laser light has begun. Continuous and pulsed switchable Tm doping3+Research on fiber laser seed sources proposes Tm doping3+In the fiber laser seed source system, the switching between two lasers is carried out by adopting an acousto-optic Q-switching mode, namely Tm doping3+An acousto-optic Q-switch is added in a resonant cavity of the fiber laser. O.Antipov et al, in an acousto-optic Q-switching mode, realized efficient laser oscillation at 1670nm pumped TM: Lu2O3 using a Raman-shifted erbium fiber laser, and realized continuous wave and active Q-switching Tm in a high-quality beam3+:Lu2O3 ceramics lasers in-band pumped by a Raman-shifted erbium fiber laser at 1670nm]However, these studies are only for the switching between the laser pulse and the continuous laser, and the switching cannot be instantaneously completed due to the long laser switching time.
Until now, a polarizer or a dual brewster polarizer is commonly used for realizing polarization output of a solid laser, but this only can realize single polarization output, or a beam splitter prism is used for splitting light and then realizing different polarization output, this splitting light can reduce the light power and simultaneously complicate the light path, for example, in "a control stabilization method of a laser polarization control stabilization device" with patent number cn201611253656.x, devices such as a polarization controller, a polarizer, a beam splitter and the like are used, which increases the cost and adds the loss of the devices to the light power, and increases the complexity of the light path. If the polarization switch is used to switch the polarization state, there is a time delay during the switching process, which greatly increases the phase instability and greatly reduces the polarization characteristics of the laser.
Disclosure of Invention
In view of the above prior art, the technical problem to be solved by the present invention is to provide a device and a method for switching output of continuous light and pulsed light based on self-injection, which effectively simplify the device, reduce the device cost, and realize accurate real-time switching between continuous laser and pulsed laser.
In order to solve the technical problem, the device for switching and outputting the continuous light and the pulse light comprises a 1.9-micron horizontal line polarization continuous light laser, a first optical switch, a resonant cavity input cavity mirror, a Brewster mirror, a Ho, a LLF laser crystal, a 2-micron semi-transmission semi-reflection mirror, a first total reflection mirror, a second optical switch, a second total reflection mirror, an optical delayer, a third total reflection mirror, an optical attenuator, a resonant cavity output coupling mirror, a half-wave plate and a signal control total switch; the signal control main switch controls the first optical switch, the second optical switch, the optical delayer and the optical attenuator;
when the signal control main switch controls the first optical switch to be closed and the second optical switch to be disconnected, horizontal linear polarized light generated by the 1.9 mu m horizontal linear polarized continuous optical laser enters the resonant cavity input cavity mirror through the first optical switch, the 1.9 mu m horizontal linear polarized light provides pumping energy for the Ho, LLF laser crystal through the Brewster mirror, the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho, the 2 mu m horizontal linear polarized light is reflected to the resonant cavity output coupling mirror through the 2 mu m semi-transmission semi-reflection mirror by controlling the pumping power of the pumping source, and then continuous horizontal polarized laser is output;
when the signal control main switch controls the first optical switch to be switched off firstly and then to be switched on simultaneously with the second optical switch, 2 mu m horizontal line polarized light transmitted by the 2 mu m semi-transmission semi-reflection mirror is converted into vertical linear polarized light through the half-wave plate and is reflected to the second optical switch through the first total reflection mirror, when the second optical switch is switched off, the 2 mu m vertical linear polarized light sequentially passes through the second total reflection mirror, the optical delayer, the third total reflection mirror, the optical attenuator and the Brewster mirror, the Brewster mirror reflects the 2 mu m vertical linear polarized light to Ho, namely LLF laser crystal, and pulse laser in a vertical polarization state is output through the 2 mu m semi-transmission semi-reflection mirror.
Further, a transverse electro-optic modulation crystal is placed behind the output coupling mirror of the resonant cavity, and when a transverse half-wave voltage is not applied to the transverse electro-optic modulation crystal, the output laser is continuous horizontal polarized light or pulse vertical polarized light; when the transverse electro-optical modulation crystal applies transverse half-wave voltage, the output laser is continuous vertical polarized light or pulse horizontal polarized light.
The invention also comprises a device for switching and outputting the continuous light and the pulse light, which comprises a 1.9 mu m horizontal line polarization continuous light laser, a first optical switch, a resonant cavity input cavity mirror, a Brewster mirror, Ho, an LLF laser crystal, a 2 mu m semi-transmission semi-reflection mirror, a first lithium niobate crystal, a second 2 mu m semi-transmission semi-reflection mirror, a second lithium niobate crystal, a second optical switch, a second total reflection mirror, a light delayer, a third total reflection mirror, an optical attenuator, a resonant cavity output coupling mirror and a signal control total switch; the signal control main switch controls the first optical switch, the second optical switch, the optical delayer and the optical attenuator;
when the signal control main switch controls the first optical switch to be closed and the second optical switch to be opened, horizontal linear polarized light generated by the 1.9 mu m horizontal linear polarized continuous optical laser enters the resonant cavity input cavity mirror through the first optical switch, the 1.9 mu m horizontal linear polarized light provides pumping energy for the Ho, LLF laser crystal through the Brewster, and the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho, LLF laser crystal through controlling the pumping power of the pumping source; when 2 mu m horizontal linear polarized light is reflected to the resonant cavity output coupling mirror through the 2 mu m semi-transmission semi-reflection mirror, 2 mu m continuous horizontal polarized laser is output; when 2 mu m horizontal linear polarized light is transmitted to the first lithium niobate crystal through the 2 mu m semi-transmission semi-reflection mirror, and transverse half-wave voltage is applied to the first lithium niobate crystal, the 2 mu m continuous horizontal polarized light is changed into 2 mu m continuous vertical polarized light which is output from the second 2 mu m semi-transmission semi-reflection mirror;
when the signal control main switch controls the first optical switch to be switched off and then to be switched on simultaneously with the second optical switch, the 2 mu m horizontal linear polarized light transmitted by the first 2 mu m semi-transmission semi-reflective mirror is reflected to the second lithium niobate crystal through the first lithium niobate crystal without voltage and the second 2 mu m semi-transmission semi-reflective mirror, applying a transverse half-wave voltage to the second lithium niobate crystal, wherein 2 mu m horizontal linear polarized light is changed into 2 mu m vertical linear polarized light, the 2 mu m vertical linear polarized light sequentially passes through a closed second optical switch, a second total reflecting mirror, an optical delayer, a third total reflecting mirror, an optical attenuator and a Brewster mirror, and the Brewster mirror reflects the 2 mu m vertical linear polarized light to Ho: the LLF laser crystal is provided with a laser crystal, when 2 mu m vertical linear polarized light is reflected to the resonant cavity output coupling mirror through the 2 mu m semi-transmission semi-reflection mirror, 2 mu m pulse vertical polarized laser is output; when 2 mu m vertical linear polarized light is transmitted to the first lithium niobate crystal through the 2 mu m semi-transmission semi-reflection mirror, and transverse half-wave voltage is applied to the first lithium niobate crystal, the 2 mu m pulse vertical polarized light is changed into 2 mu m pulse horizontal polarized light which is output from the second 2 mu m semi-transmission semi-reflection mirror.
The method for switching output continuous light and pulse light by adopting a first device is characterized in that a signal control main switch controls a first optical switch (2) to be closed and a second optical switch to be disconnected, horizontal linear polarized light generated by a 1.9 mu m horizontal line polarization continuous light laser enters a resonant cavity input cavity mirror through the first optical switch, the 1.9 mu m horizontal linear polarized light provides pumping energy for a Ho, LLF laser crystal through a Brewster mirror, the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho, the 2 mu m horizontal linear polarized light is reflected to a resonant cavity output coupling mirror through a 2 mu m semi-transmission semi-reflection mirror by controlling the pumping power of a pumping source, and then continuous horizontal polarized laser is output;
the signal control main switch controls the first optical switch to be switched off firstly, then the first optical switch and the second optical switch are switched on simultaneously, 2 mu m horizontal line polarized light transmitted by the 2 mu m semi-transmission semi-reflection mirror is converted into vertical linear polarized light through a half-wave plate, the vertical linear polarized light is reflected to the second optical switch through the first total reflection mirror, when the second optical switch is switched on, the 2 mu m vertical linear polarized light sequentially passes through the second total reflection mirror, the optical delayer, the third total reflection mirror, the optical attenuator and the Brewster mirror, the Brewster mirror reflects the 2 mu m vertical linear polarized light to the Hol, namely the LLF laser crystal, and pulse laser in a vertical polarization state is output through the 2 mu m semi-transmission semi-reflection mirror.
The method for switching output continuous light and pulse light by adopting a second device is characterized in that a signal control main switch controls a first optical switch to be closed and a second optical switch to be disconnected, horizontal linear polarized light generated by a 1.9 mu m horizontal linear polarized continuous light laser enters a resonant cavity input cavity mirror through the first optical switch, the 1.9 mu m horizontal linear polarized light provides pumping energy for a Ho through a Brewster mirror, the 1.9 mu m horizontal linear polarized light passes through the Ho through the LLF laser crystal to generate 2 mu m horizontal linear polarized light, the 2 mu m horizontal linear polarized light is reflected to a resonant cavity output coupling mirror through a 2 mu m semi-transmission semi-reflection mirror, and when transverse half-wave voltage is not applied to a transverse electro-optic modulation crystal, continuous horizontal polarized laser is output; when the transverse electro-optic modulation crystal applies transverse half-wave voltage, continuous vertical polarization laser is output;
the signal control main switch controls the first optical switch to be switched off firstly, then the first optical switch and the second optical switch are switched on simultaneously, 2 mu m horizontal line polarized light transmitted by the 2 mu m semi-transmission semi-reflection mirror is converted into vertical linear polarized light through a half-wave plate, the vertical linear polarized light is reflected to the second optical switch through the first total reflection mirror, when the second optical switch is switched on, the 2 mu m vertical linear polarized light sequentially passes through the second total reflection mirror, the optical delayer, the third total reflection mirror, the optical attenuator and the Brewster mirror, the Brewster mirror reflects the 2 mu m vertical linear polarized light to Ho, namely an LLF laser crystal, and when the transverse half-wave voltage is not applied to the transverse electro-optical modulation crystal, the pulse laser in the vertical polarization state is output through the 2 mu m semi-transmission mirror; when transverse half-wave voltage is applied to the transverse electro-optical modulation crystal, pulse laser in a horizontal polarization state is output through the 2 mu m semi-transmission and semi-reflection mirror.
According to the method for switching output continuous light and pulse light by adopting a third device, a signal control main switch controls a first optical switch to be closed and a second optical switch to be opened, horizontal linear polarized light generated by a 1.9 mu m horizontal linear polarized continuous light laser enters a resonant cavity input cavity mirror through the first optical switch, the 1.9 mu m horizontal linear polarized light provides pumping energy for a Ho: LLF laser crystal through a Brewster mirror, and the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho: LLF laser crystal by controlling the pumping power of a pumping source; when 2 mu m horizontal linear polarized light is reflected to the resonant cavity output coupling mirror through the 2 mu m semi-transmission semi-reflection mirror, 2 mu m continuous horizontal polarized laser is output; when 2 mu m horizontal linear polarized light is transmitted to the first lithium niobate crystal through the 2 mu m semi-transmission semi-reflection mirror, and transverse half-wave voltage is applied to the first lithium niobate crystal, the 2 mu m continuous horizontal polarized light is changed into 2 mu m continuous vertical polarized light which is output from the second 2 mu m semi-transmission semi-reflection mirror;
the signal control main switch controls the first optical switch to be switched off firstly, then the first optical switch and the second optical switch are switched on simultaneously, 2 mu m horizontal linear polarized light transmitted by the 2 mu m semi-transmission semi-reflection mirror is reflected to the second lithium niobate crystal through the first lithium niobate crystal without voltage and the second 2 mu m semi-transmission semi-reflection mirror, applying a transverse half-wave voltage to the second lithium niobate crystal, wherein 2 mu m horizontal linear polarized light is changed into 2 mu m vertical linear polarized light, the 2 mu m vertical linear polarized light sequentially passes through a closed second optical switch, a second total reflecting mirror, an optical delayer, a third total reflecting mirror, an optical attenuator and a Brewster mirror, and the Brewster mirror reflects the 2 mu m vertical linear polarized light to Ho: the LLF laser crystal is provided with a laser crystal, when 2 mu m vertical linear polarized light is reflected to the resonant cavity output coupling mirror through the 2 mu m semi-transmission semi-reflection mirror, 2 mu m pulse vertical polarized laser is output; when 2 mu m vertical linear polarized light is transmitted to the first lithium niobate crystal through the 2 mu m semi-transmission semi-reflection mirror, and transverse half-wave voltage is applied to the first lithium niobate crystal, the 2 mu m pulse vertical polarized light is changed into 2 mu m pulse horizontal polarized light which is output from the second 2 mu m semi-transmission semi-reflection mirror.
The invention has the beneficial effects that: the switching between the linearly polarized continuous laser and the pulse laser can be realized by a single laser based on self-injection, namely, one laser can realize the functions of the continuous laser and the pulse laser, and the cost of a laser device is reduced. The accurate signal control master switch can realize the accurate real-time switching of continuous laser and pulse laser, namely can adjust according to the demand by oneself. The continuous light output by the invention is in a horizontal polarization state or the pulse is in a vertical polarization state, so that the orthogonal dual-polarization state output of the laser is realized. The self-injection laser not only can realize the real-time switching between continuous light and pulse light by a single laser device, but also can respectively output two beams of laser with mutually vertical polarization, and can switch between continuous horizontal light and pulse vertical light at any time according to requirements.
Drawings
FIG. 1 is an optical path diagram of an apparatus according to embodiment 1 of the present invention;
FIG. 2 is a circuit control system according to embodiment 1 of the present invention;
FIG. 3 is a circuit control flow chart according to embodiment 1 of the present invention;
FIG. 4 is an optical path diagram of an apparatus according to embodiment 3 of the present invention.
Detailed Description
The invention is further described with reference to the drawings and examples.
Example 1:
with reference to fig. 1 and 2, 1 is a 1.9 μm horizontal line polarization continuous light laser; 2 is a first optical switch; 3 is a resonant cavity input cavity mirror (1.9 μm wave band antireflection, 2 μm wave band total reflection); 4 is Brewster's mirror; 5 is Ho, LLF laser crystal; 6 is a 2-micron semi-transmission and semi-reflection mirror; 7 is a first total reflection mirror; 8 is a second optical switch; 9 is a second holophote; 10 is a light delayer; 11 is a third holophote; 12 is an optical attenuator; 13 is a resonant cavity output coupling mirror; 14 is a half-wave plate; and 15 is a signal control main switch.
The invention provides a device and a method for realizing continuous light and pulse light switching based on self-injection, and the laser mainly comprises a folded laser cavity and self-injectionTwo parts. The self-injection optical loop mainly comprises three total reflection mirrors and a Brewster mirror, and realizes the switching between continuous laser and pulse light by simultaneously controlling two optical switches and adjusting an intracavity optical delayer and an optical attenuator. The laser component comprises a 1.9 μm horizontal line polarized continuous light laser 1, a first optical switch 2, a resonant cavity input cavity mirror 3, a Brewster lens 4, and a Ho-LLF (Ho)3+:LiLuF4) The laser comprises a laser crystal 5, a 2-micron semi-transmission and semi-reflection mirror 6, a half-wave plate 14, a first total reflection mirror 7, a second optical switch 8, a second total reflection mirror 9, an optical delayer 10, a third total reflection mirror 11, an optical attenuator 12 and a resonant cavity output coupling mirror 13. Folding the laser cavity: the folded laser cavity sequentially comprises a 1.9 mu m horizontal line polarization continuous optical laser 1, a first optical switch 2, a resonant cavity input cavity mirror 3, a Brewster mirror 4, a Ho, an LLF laser crystal 5, a 2 mu m semi-transmission semi-reflection mirror 6 and a resonant cavity output coupling mirror 13. Self-injection into the cavity: the self-injection cavity sequentially comprises a 2-micron semi-transmission semi-reflection mirror 6, a half-wave plate 14, a first total reflection mirror 7, a second optical switch 8, a second total reflection mirror 9, an optical delayer 10, a third total reflection mirror 11, an optical attenuator 12, a Brewster mirror 4 and a Hol LLF laser crystal 5;
the method comprises the following steps:
1) folding the laser cavity device: horizontal linear polarized light generated by a 1.9 mu m horizontal line polarized continuous light laser 1 enters a resonant cavity input cavity mirror 3 through a first optical switch 2, wherein the resonant cavity input cavity mirror 3 is plated with a 1.9 mu m antireflection film, and the 1.9 mu m horizontal linear polarized light provides pumping energy for a Ho: LLF laser crystal 5 through a Brewster 4. The linear polarized light of 1.9 mu m generates linear polarized light of 2 mu m through the Ho: LLF laser crystal 5 by controlling the pumping power of the pumping source. The linearly polarized light with the size of 2 mu m is reflected to the resonant cavity output coupling mirror 13 through the semi-transmission semi-reflection mirror 6 with the size of 2 mu m, and continuous horizontal polarized laser is output (a single-pass optical path 3-4-5-6-13 of the resonant cavity);
2) self-injection cavity device: after the laser is stably output, 2 mu m horizontal line polarized light transmitted by the 2 mu m semi-transmission semi-reflection mirror 6 is converted into vertical linear polarized light through the half-wave plate 14, the vertical linear polarized light is reflected to the second photoelectric switch 8 by the first total reflection mirror 7, and when the switch 8 is closed, the 2 mu m vertical linear polarized light sequentially passes through the second total reflection mirror 9, the optical delayer 10, the third total reflection mirror 11, the optical attenuator 12 and the Brewster mirror 4, wherein the Brewster mirror 4 can reflect the 2 mu m vertical linear polarized light to Ho, and the LLF laser crystal 5 completes a primary self-injection light loop (self-injection light loop 6-14-7-8-9-10-11-12-4-5-6);
3) the pulse laser and continuous laser output circuit controls:
referring to fig. 3, the signal control main switch 15 controls the first optical switch 2, the second optical switch 8, the optical delay 10, and the optical attenuator 12, respectively, and the signal control main switch 15 controls the first optical switch 2 and the second optical switch 8, respectively, to achieve continuous laser output. The signal control main switch respectively controls the first optical switch 2, the second optical switch 8, the optical delayer 10 and the optical attenuator 12 to realize pulse laser output. The real-time switching between the pulse laser and the continuous laser can be realized through the precise control of the signal control main switch 15. The signal control main switch 15 adopts a highly integrated control circuit, can automatically switch laser pulse output or continuous output according to requirements, and can ensure the delay and synchronization of each device.
When the first optical switch 2 is closed and the second optical switch 8 is opened, the 2 μm horizontal continuous polarized light oscillates in the folded cavity, and the horizontal polarization state continuous laser output is realized.
First, the first optical switch 2 is turned off and is rapidly turned on simultaneously with the second optical switch 8, at this time, the horizontal polarized light is changed into vertical polarized light through the half-wave plate 14, and the vertical polarized light is self-injected through the finely adjusted optical attenuator 10 and the optical delayer 12, so that the vertical polarized laser can be generated and the pulse laser output in the vertical polarization state is generated.
Example 2:
with reference to fig. 1, a transverse electro-optic modulation crystal is placed behind the resonator output coupling mirror 13, so that 2 μm continuous output of orthogonal polarization state or pulsed output of orthogonal polarization state can be realized. When the transverse electro-optic modulation crystal does not apply transverse half-wave voltage, the output laser is continuous horizontal polarized light, namely P polarized light, or pulse vertical polarized light, namely S polarized light; when the transverse electro-optical modulation crystal applies transverse half-wave voltage, the output laser is continuous vertical polarized light, namely S polarized light, or pulse horizontal polarized light, namely P polarized light. By applying the on-off of half-wave voltage on the transverse electro-optical modulation crystal, S/P polarization state asynchronous output in continuous/pulse can be realized.
The specific method comprises the following steps: the signal control main switch 15 controls the first optical switch 2 to be closed and the second optical switch 8 to be disconnected, horizontal linear polarized light generated by the 1.9 mu m horizontal linear polarized continuous optical laser 1 enters the resonant cavity input cavity mirror 3 through the first optical switch 2, the 1.9 mu m horizontal linear polarized light provides pumping energy for the Ho, the LLF laser crystal 5, the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho, the 2 mu m horizontal linear polarized light is reflected to the resonant cavity output coupling mirror 13 through the 2 mu m semi-transmission semi-reflection mirror 6 by controlling the pumping power of a pumping source, and when the transverse half-wave voltage is not applied to the transverse electro-optic modulation crystal, continuous horizontal polarized laser is output; when the transverse electro-optic modulation crystal applies transverse half-wave voltage, continuous vertical polarization laser is output;
the signal control main switch controls the first optical switch 2 to be disconnected firstly, then the signal control main switch and the second optical switch 8 are closed simultaneously, 2 mu m horizontal line polarized light transmitted by the 2 mu m semi-transmission semi-reflection mirror 6 is converted into vertical linearly polarized light through the half-wave plate 14, the vertical linearly polarized light is reflected to the second optical switch 8 through the first total reflection mirror 7, when the second optical switch 8 is closed, the 2 mu m vertical linearly polarized light sequentially passes through the second total reflection mirror 9, the optical delayer 10, the third total reflection mirror 11, the optical attenuator 12 and the Brewster mirror 4, the Brewster mirror 4 reflects the 2 mu m vertical linearly polarized light to Ho, the LLF laser crystal 5, when the transverse half-wave voltage is not applied to the transverse electro-optical modulation crystal, the pulse laser in the vertical polarization state is output through the 2 mu m semi-transmission semi-reflection mirror 6; when transverse half-wave voltage is applied to the transverse electro-optical modulation crystal, pulse laser in a horizontal polarization state is output through the 2 mu m semi-transmission semi-reflection mirror 6.
Example 3:
in connection with fig. 4, the 1.9 μm horizontally polarized continuous light laser 1 in fig. 1 uses a side-pumped mode, which is also applicable to end-pumping. If the first total reflection mirror 7 is replaced by the second 2 μm semi-transmission semi-reflection mirror 17, the half-wave plate 14 is removed and two lithium niobate crystals with transverse half-wave voltage control are replaced on both sides of the second 2 μm semi-transmission semi-reflection mirror 17 as the first lithium niobate crystal 16 and the second lithium niobate crystal 18, respectively, as shown in fig. 4.
The signal control main switch 15 controls the first optical switch 2 to be closed and the second optical switch 8 to be opened, horizontal linear polarized light generated by the 1.9 mu m horizontal linear polarized continuous optical laser 1 enters the resonant cavity input cavity mirror 3 through the first optical switch 2, the 1.9 mu m horizontal linear polarized light provides pumping energy for the Ho: LLF laser crystal 5 through the Brewster lens 4, and the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho: LLF laser crystal 5 by controlling the pumping power of a pumping source. When 2 μm horizontal linear polarized light is reflected to the resonant cavity output coupling mirror 13 by the 2 μm semi-transmission semi-reflection mirror 6, 2 μm continuous horizontal polarized laser is output; when 2 μm horizontal linear polarized light is transmitted to the first lithium niobate crystal 16 through the 2 μm semi-transmissive half-mirror 6, and a transverse half-wave voltage is applied to the first lithium niobate crystal 16, the 2 μm continuous horizontal polarized light becomes 2 μm continuous vertical polarized light (i.e., p-polarized light) and is output from the second 2 μm semi-transmissive half-mirror 17, i.e., continuous orthogonal polarization output with dual port output can be realized.
The signal control main switch 15 controls the first optical switch 2 to be switched off firstly, then the signal control main switch and the second optical switch 8 are switched on simultaneously, horizontal linear polarized light generated by the 1.9 mu m horizontal linear polarized continuous optical laser 1 enters the resonant cavity input cavity mirror 3 through the first optical switch 2, the 1.9 mu m horizontal linear polarized light provides pumping energy for the Ho: LLF laser crystal 5 through the Brewster 4, and the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho: LLF laser crystal 5 by controlling the pumping power of a pumping source. The 2 μm horizontally linearly polarized light transmitted by the 2 μm semi-transmissive semi-reflective mirror 6 is reflected to the second lithium niobate crystal 18 through the first lithium niobate crystal 16 and the second 2 μm semi-transmissive semi-reflective mirror 17 to which no voltage is applied, and the 2 μm horizontally polarized light (i.e., P polarized light) is changed into 2 μm vertically polarized light (S polarized light) by applying the transverse half-wave voltage to the second lithium niobate crystal 18. The 2 mu m vertical linear polarized light sequentially passes through a closed second optical switch 8, a second total reflection mirror 9, an optical delayer 10, a third total reflection mirror 11, an optical attenuator 12 and a Brewster mirror 4, and the Brewster mirror 4 reflects the 2 mu m vertical linear polarized light to a Hol LLF laser crystal 5. When the 2 mu m vertical linear polarized light is reflected to the resonant cavity output coupling mirror 13 through the 2 mu m semi-transmission semi-reflection mirror 6, 2 mu m pulse vertical polarized laser is output; when 2 μm vertical linear polarized light is transmitted to the first lithium niobate crystal 16 through the 2 μm semi-transmissive half-reflective mirror 6, and a transverse half-wave voltage is applied to the first lithium niobate crystal 16, the 2 μm pulse vertical polarized light becomes 2 μm pulse horizontal polarized light (i.e., S polarized light) and is output from the second 2 μm semi-transmissive half-reflective mirror 17, that is, pulsed orthogonal polarized output with dual port output can be realized.

Claims (6)

1. An apparatus for switching output of continuous light and pulsed light, characterized in that: the device comprises a 1.9 mu m horizontal line polarization continuous light laser (1), a first optical switch (2), a resonant cavity input cavity mirror (3), a Brewster mirror (4), a Ho LLF laser crystal (5), a 2 mu m semi-transmission semi-reflection mirror (6), a first total reflection mirror (7), a second optical switch (8), a second total reflection mirror (9), an optical delayer (10), a third total reflection mirror (11), an optical attenuator (12), a resonant cavity output coupling mirror (13), a half-wave plate (14) and a signal control total switch (15); the signal control main switch (15) controls the first optical switch (2), the second optical switch (8), the optical delayer (10) and the optical attenuator (12);
when the signal control main switch (15) controls the first optical switch (2) to be closed and the second optical switch (8) to be disconnected, horizontal linear polarized light generated by the 1.9 mu m horizontal linear polarized continuous optical laser (1) enters the resonant cavity input cavity mirror (3) through the first optical switch (2), the 1.9 mu m horizontal linear polarized light provides pumping energy for the Ho: LLF laser crystal (5) through the Brewster mirror (4), the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho: LLF laser crystal (5) by controlling the pumping power of a pumping source, the 2 mu m horizontal linear polarized light is reflected to the resonant cavity output coupling mirror (13) through the 2 mu m semi-transmission semi-reflection mirror (6), and then continuous horizontal polarized laser is output;
when the signal control main switch controls the first optical switch (2) to be switched off firstly and then to be switched on simultaneously with the second optical switch (8), 2 mu m horizontal line polarized light transmitted by the 2 mu m semi-transmission semi-reflection mirror (6) is converted into vertical linearly polarized light through the half-wave plate (14) and is reflected to the second optical switch (8) through the first total reflection mirror (7), when the second optical switch (8) is switched on, the 2 mu m vertical linearly polarized light sequentially passes through the second total reflection mirror (9), the optical delayer (10), the third total reflection mirror (11), the optical attenuator (12) and the Brewster mirror (4), the Brewster mirror (4) reflects the 2 mu m vertical linearly polarized light to the Hol: LLF laser crystal (5), and pulse laser in a vertical polarization state is output through the 2 mu m semi-transmission semi-reflection mirror (6).
2. An apparatus for switching output of continuous light and pulsed light according to claim 1, wherein: a transverse electro-optic modulation crystal is placed behind the output coupling mirror of the resonant cavity, and when a transverse half-wave voltage is not applied to the transverse electro-optic modulation crystal, the output laser is continuous horizontal polarized light or pulse vertical polarized light; when the transverse electro-optical modulation crystal applies transverse half-wave voltage, the output laser is continuous vertically polarized light or pulse horizontally polarized light.
3. An apparatus for switching output of continuous light and pulsed light, characterized in that: the device comprises a 1.9 mu m horizontal line polarization continuous light laser (1), a first optical switch (2), a resonant cavity input cavity mirror (3), a Brewster mirror (4), a Ho, an LLF laser crystal (5), a 2 mu m semi-transmission semi-reflection mirror (6), a first lithium niobate crystal (16), a second 2 mu m semi-transmission semi-reflection mirror (17), a second lithium niobate crystal (18), a second optical switch (8), a second total reflection mirror (9), a light delayer (10), a third total reflection mirror (11), an optical attenuator (12), a resonant cavity output coupling mirror (13) and a signal control total switch (15); the signal control main switch (15) controls the first optical switch (2), the second optical switch (8), the optical delayer (10) and the optical attenuator (12);
when the signal control main switch (15) controls the first optical switch (2) to be closed and the second optical switch (8) to be opened, horizontal linear polarized light generated by the 1.9 mu m horizontal linear polarized continuous optical laser (1) enters the resonant cavity input cavity mirror (3) through the first optical switch (2), the 1.9 mu m horizontal linear polarized light provides pumping energy for the Ho: LLF laser crystal (5) through the Brewster mirror (4), and the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho: LLF laser crystal (5) by controlling the pumping power of a pumping source; when 2 mu m horizontal linear polarized light is reflected to a resonant cavity output coupling mirror (13) through a 2 mu m semi-transmission semi-reflection mirror (6), 2 mu m continuous horizontal polarized laser is output; when 2 mu m horizontal linear polarized light is transmitted to a first lithium niobate crystal (16) through a 2 mu m semi-transmission semi-reflection mirror (6), and a transverse half-wave voltage is applied to the first lithium niobate crystal (16), 2 mu m continuous horizontal polarized light is changed into 2 mu m continuous vertical polarized light and is output from a second 2 mu m semi-transmission semi-reflection mirror (17);
when the signal control main switch (15) controls the first optical switch (2) to be switched off firstly and then to be switched on simultaneously with the second optical switch (8), 2 mu m horizontal linear polarized light transmitted by the first 2 mu m semi-transmission semi-reflection mirror (6) is reflected to the second lithium niobate crystal (18) through the first lithium niobate crystal (16) and the second 2 mu m semi-transmission semi-reflection mirror (17) without voltage, transverse half-wave voltage is applied to the second lithium niobate crystal (18), 2 mu m horizontal linear polarized light is changed into 2 mu m vertical linear polarized light, the 2 mu m vertical linear polarized light is sequentially reflected to the Hol LLF laser crystal (5) through the second optical switch (8), the second total reflection mirror (9), the optical delayer (10), the third total reflection mirror (11), the optical attenuator (12) and the Brewster mirror (4) which are switched on, when the 2 mu m vertical linear polarized light is reflected to the resonant cavity output coupling mirror (13) through the 2 mu m semi-transmission semi-reflection mirror (6), 2 mu m pulse vertical polarized laser is output; when 2 μm vertically linearly polarized light is transmitted to the first lithium niobate crystal (16) through the 2 μm semi-transmissive semi-reflective mirror (6), and a transverse half-wave voltage is applied to the first lithium niobate crystal (16), the 2 μm pulse vertically polarized light becomes 2 μm pulse horizontally polarized light and is output from the second 2 μm semi-transmissive semi-reflective mirror (17).
4. A method for switching output of continuous light and pulsed light using the apparatus of claim 1, wherein: the signal control main switch (15) controls the first optical switch (2) to be closed and the second optical switch (8) to be opened, horizontal linear polarized light generated by the 1.9 mu m horizontal linear polarized continuous optical laser (1) enters the resonant cavity input cavity mirror (3) through the first optical switch (2), the 1.9 mu m horizontal linear polarized light provides pumping energy for the Ho: LLF laser crystal (5) through the Brewster mirror (4), the 1.9 mu m horizontal linear polarized light generates 2 mu m horizontal linear polarized light through the Ho: LLF laser crystal (5) by controlling the pumping power of a pumping source, the 2 mu m horizontal linear polarized light is reflected to the resonant cavity output coupling mirror (13) through the 2 mu m semi-transmission semi-reflection mirror (6), and then continuous horizontal polarized laser is output;
the signal control main switch controls a first optical switch (2) to be disconnected firstly, then the first optical switch and a second optical switch (8) are closed simultaneously, 2 mu m horizontal line polarized light transmitted by a 2 mu m semi-transmission semi-reflection mirror (6) is converted into vertical linearly polarized light through a half-wave plate (14), the vertical linearly polarized light is reflected to the second optical switch (8) through a first total reflection mirror (7), when the second optical switch (8) is closed, the 2 mu m vertical linearly polarized light sequentially passes through a second total reflection mirror (9), a light delayer (10), a third total reflection mirror (11), an optical attenuator (12) and a Brewster mirror (4), the Brewster mirror (4) reflects the 2 mu m vertical linearly polarized light to a Ho: LLF laser crystal (5), and pulse laser in a vertical polarization state is output through the 2 mu m semi-transmission semi-reflection mirror (6).
5. A method for switching output of continuous light and pulsed light using the apparatus of claim 2, wherein: the signal control main switch (15) controls the first optical switch (2) to be closed and the second optical switch (8) to be opened, horizontal linear polarized light generated by the 1.9 mu m horizontal linear polarized continuous optical laser (1) enters the resonant cavity input cavity mirror (3) through the first optical switch (2), the 1.9 mu m horizontal linear polarized light provides pumping energy for the Ho: LLF laser crystal (5) through the Brewster mirror (4), the 1.9 mu m horizontal linear polarized light generates the 2 mu m horizontal linear polarized light through the Ho: LLF laser crystal (5) by controlling the pumping power of a pumping source, the 2 mu m horizontal linear polarized light is reflected to the resonant cavity output coupling mirror (13) through the 2 mu m semi-transmission semi-reflection mirror (6), and when the transverse half-wave voltage is not applied to the transverse electro-optical modulation crystal, the continuous horizontal polarized laser is output; when the transverse electro-optic modulation crystal applies transverse half-wave voltage, continuous vertical polarization laser is output;
the signal control main switch controls a first optical switch (2) to be disconnected firstly, then the first optical switch and a second optical switch (8) are closed simultaneously, 2 mu m horizontal line polarized light transmitted by a 2 mu m semi-transmission semi-reflection mirror (6) is converted into vertical linear polarized light through a half-wave plate (14), the vertical linear polarized light is reflected to the second optical switch (8) through a first total reflection mirror (7), when the second optical switch (8) is closed, the 2 mu m vertical linear polarized light sequentially passes through a second total reflection mirror (9), a light delayer (10), a third total reflection mirror (11), an optical attenuator (12) and a Brewster mirror (4), the Brewster mirror (4) reflects the 2 mu m vertical linear polarized light to Ho: LLF laser crystal (5), and when transverse half-wave voltage is not applied to the transverse electro-optical modulation crystal, pulse laser in a vertical polarization state is output through the 2 mu m semi-reflection mirror (6); when transverse half-wave voltage is applied to the transverse electro-optical modulation crystal, pulse laser in a horizontal polarization state is output through the 2 mu m semi-transmission semi-reflection mirror (6).
6. A method for switching output of continuous light and pulsed light using the apparatus of claim 3, wherein: the signal control main switch (15) controls the first optical switch (2) to be closed and the second optical switch (8) to be opened, horizontal linear polarization generated by the 1.9 mu m horizontal linear polarization continuous optical laser (1) enters the resonant cavity input cavity mirror (3) through the first optical switch (2), the 1.9 mu m horizontal linear polarization provides pumping energy for the Ho: LLF laser crystal (5) through the Brewster mirror (4), and the 1.9 mu m horizontal linear polarization generates 2 mu m horizontal linear polarization through the Ho: LLF laser crystal (5) by controlling the pumping power of a pumping source; when 2 mu m horizontal linear polarized light is reflected to a resonant cavity output coupling mirror (13) through a 2 mu m semi-transmission semi-reflection mirror (6), 2 mu m continuous horizontal polarized laser is output; when 2 mu m horizontal linear polarized light is transmitted to a first lithium niobate crystal (16) through a 2 mu m semi-transmission semi-reflection mirror (6), and transverse half-wave voltage is applied to the first lithium niobate crystal (16), the 2 mu m continuous horizontal polarized light is changed into 2 mu m continuous vertical polarized light and is output from a second 2 mu m semi-transmission semi-reflection mirror (17);
the signal control main switch (15) controls the first optical switch (2) to be switched off firstly, then the first optical switch and the second optical switch (8) are switched on simultaneously, 2 mu m horizontal linear polarization transmitted by the 2 mu m semi-transmission semi-reflection mirror (6) is reflected to a second lithium niobate crystal (18) through a first lithium niobate crystal (16) and a second 2 mu m semi-transmission semi-reflection mirror (17) without voltage, transverse half-wave voltage is applied to the second lithium niobate crystal (18), the 2 mu m horizontal linear polarization is changed into 2 mu m vertical linear polarization, the 2 mu m vertical linear polarization sequentially passes through the second optical switch (8), the second total reflection mirror (9), the optical delayer (10), the third total reflection mirror (11), the optical attenuator (12) and the Brewster mirror (4) which are switched on, and the 2 mu m vertical linear polarization is reflected to the Hol LLF laser crystal (5), when the 2 mu m vertical linear polarized light is reflected to the resonant cavity output coupling mirror (13) through the 2 mu m semi-transmission semi-reflection mirror (6), 2 mu m pulse vertical polarized laser is output; when 2 μm vertically linearly polarized light is transmitted to the first lithium niobate crystal (16) through the 2 μm semi-transmissive semi-reflective mirror (6), and a transverse half-wave voltage is applied to the first lithium niobate crystal (16), the 2 μm pulse vertically polarized light becomes 2 μm pulse horizontally polarized light and is output from the second 2 μm semi-transmissive semi-reflective mirror (17).
CN202210066093.2A 2022-01-20 2022-01-20 Device and method for switching output continuous light and pulse light Active CN114520458B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210066093.2A CN114520458B (en) 2022-01-20 2022-01-20 Device and method for switching output continuous light and pulse light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210066093.2A CN114520458B (en) 2022-01-20 2022-01-20 Device and method for switching output continuous light and pulse light

Publications (2)

Publication Number Publication Date
CN114520458A true CN114520458A (en) 2022-05-20
CN114520458B CN114520458B (en) 2023-08-01

Family

ID=81597190

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210066093.2A Active CN114520458B (en) 2022-01-20 2022-01-20 Device and method for switching output continuous light and pulse light

Country Status (1)

Country Link
CN (1) CN114520458B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190074656A1 (en) * 2017-09-06 2019-03-07 National Tsing Hua University Fiber laser system and method for generating pulse laser light
CN110582904A (en) * 2017-05-08 2019-12-17 来特激光公司 Apparatus and method for generating high repetition rate laser pulse bursts
WO2021054401A1 (en) * 2019-09-19 2021-03-25 大学共同利用機関法人自然科学研究機構 Laser device and pulse width-changing method
CN112952541A (en) * 2021-01-28 2021-06-11 哈尔滨工程大学 Device and method for obtaining polarized laser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110582904A (en) * 2017-05-08 2019-12-17 来特激光公司 Apparatus and method for generating high repetition rate laser pulse bursts
US20190074656A1 (en) * 2017-09-06 2019-03-07 National Tsing Hua University Fiber laser system and method for generating pulse laser light
WO2021054401A1 (en) * 2019-09-19 2021-03-25 大学共同利用機関法人自然科学研究機構 Laser device and pulse width-changing method
CN112952541A (en) * 2021-01-28 2021-06-11 哈尔滨工程大学 Device and method for obtaining polarized laser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王赫,范滇元: "用腔内自注入技术和铁氧体线技术产生脉宽连续可调的毫微秒激光脉冲", 中国激光, no. 03 *

Also Published As

Publication number Publication date
CN114520458B (en) 2023-08-01

Similar Documents

Publication Publication Date Title
Yankov Cr4+: YAG Q-switching of Nd: host laser oscillators
US6580732B1 (en) Multiple mode laser
CN111082301B (en) LN cavity emptying type orthogonal polarization synchronous pulse laser generation method based on double 45-MgO
CN111431021A (en) Laser with orthogonal polarization output
CA2366590C (en) High pulse rate laser system
CN114520459B (en) Device and method for switching output of continuous orthogonal polarized laser
CN111404009B (en) Device and method for outputting orthogonal polarization laser based on double Brewster window multiports
EP0951111A2 (en) Polarisation based mode-locking of a laser
CA2204563C (en) Eyesafe laser transmitter with single resonator cavity for both pump laser and optical parametric oscillator
CN114520458B (en) Device and method for switching output continuous light and pulse light
CN108767650A (en) A kind of function and service electro-optical Q-switch
US5271025A (en) Mode-locked upconversion laser source
AU2006322643A1 (en) Q-switched laser
CN112290360A (en) Dual-wavelength free control output laser
CN212182756U (en) Laser with orthogonal polarization output
CN111129917B (en) Single-block double 45-MgO LN multi-modulation mode-based multifunctional laser device and output method
CN109462138A (en) A kind of Gao Zhongying short pulse infrared laser
CN112952541A (en) Device and method for obtaining polarized laser
CN110932081B (en) Electro-optically Q-switched dual-wavelength laser alternate coaxial output method and laser
US11276980B2 (en) Method and apparatus for repetition rate synchronisation of mode-locked lasers
CN111509550A (en) High-peak power narrow linewidth 1064nm all-solid-state pulse laser
CN110932070A (en) Dual-wavelength alternating Q-switching narrow pulse laser and output method
CN110829172B (en) Laser output method with repetition frequency 2 times electro-optic Q-switched frequency and laser
CN113675707B (en) All-solid-state green laser
CN110838667A (en) Gain medium multiplexing thin-slice hybrid amplification laser and laser output method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant