CN114927932A - Multipurpose 1064nm laser capable of automatically switching working modes - Google Patents
Multipurpose 1064nm laser capable of automatically switching working modes Download PDFInfo
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- 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
- H01S3/139—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
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- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
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- 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
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/117—Q-switching using intracavity acousto-optic devices
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- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1611—Solid materials characterised by an active (lasing) ion rare earth neodymium
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- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/163—Solid materials characterised by a crystal matrix
- H01S3/164—Solid materials characterised by a crystal matrix garnet
- H01S3/1643—YAG
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- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/163—Solid materials characterised by a crystal matrix
- H01S3/1671—Solid materials characterised by a crystal matrix vanadate, niobate, tantalate
- H01S3/1673—YVO4 [YVO]
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Abstract
The invention relates to the technical field of lasers, in particular to a multipurpose 1064nm laser capable of automatically switching working modes, wherein a laser coupling system is arranged on the light emitting side of a pump laser source; a coupling lens group is arranged in the laser coupling system; a resonant cavity is arranged on one side of the coupling lens group; the two ends of the resonant cavity are a 1064nm laser high-reflection mirror and a 1064nm laser coupling output mirror, and a laser gain medium is arranged between the two mirrors; an acousto-optic Q switch is arranged between the laser gain medium and the 1064nm laser coupling output mirror; the acousto-optic Q switch consists of an acousto-optic crystal and a driving device; the driving device and the laser coupling system are connected with a feedback system. The invention realizes the laser which can efficiently operate under various modes of continuous, low repetition frequency and high repetition frequency and can automatically switch the working mode, can meet various application requirements and solves the problems of single operation mode and function of the prior laser.
Description
Technical Field
The invention relates to the technical field of lasers, in particular to a multipurpose 1064nm laser capable of automatically switching working modes.
Background
With the development of laser technology and the popularization of related corollary equipment in recent years, the application of laser in the fields of industrial production, scientific research, biomedical treatment, military affairs and the like is increasingly prominent. Among them, 1064nm laser is the most widely used light source in many laser application fields, and is a foundation stone for many laser applications, for example: photoelectric countermeasure, laser cutting, laser cleaning, laser marking, and the like. For different application requirements, the required laser parameters (such as laser repetition frequency, laser single pulse energy, laser power, laser pulse width, etc.) often have great differences, which requires lasers of different working systems, such as: in the application of photoelectric countermeasure, high-power continuous light sources are needed for laser blindness, high-energy pulse light sources are needed for laser latency, and high-repetition-frequency pulse light sources are needed for laser scanning; laser cleaning applications require a pulsed light source of large energy (typically: 10000 hz repetition rate, several millijoules to tens of millijoules single pulse energy); laser marking applications require high repetition frequency pulsed light sources (typically: repetition frequencies from tens of thousands of hertz to hundreds of thousands of hertz, single pulse energies from micro joules to hundreds of micro joules); laser cutting, welding applications require high power continuous light sources, and the like.
The laser is the core of the laser device, and its performance largely determines the laser application performance. The current laser equipment develops towards multiple purposes and multiple functions, namely, one laser equipment can meet the requirements of multiple different applications. This places higher demands on the core laser of the laser device: the laser can work efficiently in multiple modes to meet the requirements of different applications. However, the existing laser has a single working system, and a single laser often can only satisfy one application, thereby greatly limiting the application of laser equipment and causing resource waste.
Therefore, the multipurpose 1064nm laser capable of automatically switching the working modes is designed, the existing conventional laser crystal is utilized, reasonable combination is achieved, the adjustable pumping effect of automatic feedback control is achieved, the laser capable of efficiently operating under various modes of continuous, low repetition frequency and high repetition frequency and automatically switching the working modes is achieved, and the application capacity of the laser is improved.
Disclosure of Invention
The invention provides a multipurpose 1064nm laser capable of automatically switching working modes, aiming at making up the defects that the laser in the prior art has single function and cannot meet various application requirements.
A multi-purpose 1064nm laser with automatically switchable working modes comprises a pump laser source,
a laser coupling system automatically controlled by a computer is arranged on the light emitting side of the pump laser source;
the laser coupling system consists of a displacement platform automatically controlled by a computer and a coupling lens group fixed on the displacement platform;
the coupling lens group is provided with a resonant cavity at one side far away from the pump laser source; the two ends of the resonant cavity are provided with a 1064nm laser high-reflection mirror and a 1064nm laser coupling output mirror, and the 1064nm laser high-reflection mirror is positioned between the coupling lens group and the 1064nm laser coupling output mirror;
a laser gain medium is arranged between the 1064nm laser high-reflection mirror and the 1064nm laser coupling output mirror; the laser gain medium comprises two crystals, and the emission center wavelengths of the two crystals are 1064 nm;
an acousto-optic Q switch is arranged between the laser gain medium and the 1064nm laser coupling output mirror; the acousto-optic Q switch consists of an acousto-optic crystal and a driving device;
and the driving device and the laser coupling system are connected with a feedback system.
Furthermore, in order to better realize the invention, the laser gain medium is formed by tightly adhering Nd: YVO to Nd: YAG crystal 4 The crystal composition is that the Nd: YAG crystal is positioned on a 1064nm laser high-reflection mirror and Nd: YVO 4 Between the crystals.
Further, in order to better implement the present invention, the laser coupling system automatically controlled by the computer automatically controls the distance between the laser coupling system and the laser gain medium through the computer according to the feedback signal provided by the feedback system.
Further, to better implement the present invention, the signal of the feedback system is collected from the driving device or the output laser signal or the signal providing the information of the repetition frequency of the laser.
Furthermore, in order to better realize the invention, 808nm laser high-transmittance films are plated on two sides of the 1064nm laser high-reflectance mirror; one side of the 1064nm laser high-reflection mirror, which is close to the laser gain medium, is plated with a 1064nm laser high-reflection film; and a 1064nm laser partial transmission film is plated on one side of the 1064nm laser coupling output mirror close to the driving device of the acousto-optic Q switch, and an anti-reflection film for 1064nm laser is plated on one side of the 1064nm laser coupling output mirror far away from the driving device of the acousto-optic Q switch.
The invention has the beneficial effects that:
1. the laser coupling system automatically controlled by a computer can automatically adjust the position of the beam waist of the pump light according to actual requirements and the real-time running state of the laser, and the effect of adjusting the absorption ratio of two crystals to the pump light can be achieved without manual intervention.
2. Two laser crystals are used for providing laser gain together, and advantage complementation is carried out. YAG crystal has the characteristics of longer upper energy level service life, excellent mechanical and thermodynamic properties and the like, can improve the upper limit of pumping power, improve output, realize high-efficiency operation of the laser when the repetition frequency is as low as thousands of hertz, and realize high-energy laser output; using Nd: YVO 4 The crystal has a large absorption cross sectionThe surface, the stimulated emission cross section and the upper energy level have relatively short service life, so that the laser can be ensured to efficiently run when the repetition frequency is as high as tens of thousands of hertz, and high average power and short pulse width laser output can be realized. The effect that the laser can be operated efficiently under the state of low repetition frequency or high repetition frequency is achieved.
3. Compared with the prior laser single crystal structure (single Nd: YAG or single Nd: YVO) 4 ) Nd: YAG and Nd: YVO 4 The double-crystal structure can effectively relieve the heat load of the laser (under the same pumping power, the double crystals share the heat of the single crystal in the traditional single crystal structure), and the effect of improving the stability and the efficiency of the laser is achieved.
The laser device can efficiently operate under various modes of continuous, low repetition frequency and high repetition frequency and can automatically switch working modes, can meet various application requirements, and solves the problem that the conventional laser device has single operating mode and function. The laser system taking the laser as the core light source can meet different application requirements: when the laser operates in a high-power continuous state, laser cutting, welding and the like can be realized; when the laser runs in a low repetition frequency and large energy state, laser cleaning, laser resistance adjustment, remote distance measurement and the like can be realized; laser marking, laser scanning, laser drilling, etc. can be achieved when the laser is operated at a high repetition rate, short pulse regime. The laser system can achieve the effect of one machine with multiple purposes, conforms to the trend of current laser application development, greatly improves the application degree of the laser system, reduces the cost and improves the efficiency.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, the position of the upper end of the main shaft,
1. the device comprises a pump laser source, 2, a laser coupling system, 3, a resonant cavity, 4, a laser gain medium, 5, an acousto-optic Q switch, 6, an energy transmission optical fiber, 7 and a feedback system;
21. displacement platform, 22, coupling lens group, 31, 1064nm laser high-reflection mirror, 32, 1064nm laser coupling output mirror, 41, Nd: YAG crystal, 42, Nd: YVO 4 Crystal 51, acousto-optic crystal 52, driverAnd (4) moving the device.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "disposed," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
FIG. 1 shows an embodiment of the present invention, which is a multi-purpose 1064nm laser capable of automatically switching working modes, and capable of working efficiently in both continuous mode and Q-switched mode within the repetition frequency range of 5000Hz-20000 Hz.
As shown in the figure, the present embodiment includes: the wavelength of the emergent light of the pump laser source 1 can be about 808nm, and is not particularly limited; the laser coupling system 2 automatically controlled by a computer is positioned on the light-emitting side of the pump laser source 1; the laser coupling system 2 controlled by the computer automatically comprises a displacement platform 21 controlled by the computer automatically and a coupling lens group 22 fixed on the displacement platform. The energy transmission optical fiber 6 is arranged between the pump laser source 1 and the laser coupling system 2 automatically controlled by a computer so as to lead out emergent light of the pump laser source 1; the laser coupling system 2 automatically controlled by a computer can collimate and focus the laser emitted by the pump laser source 1 led out by the energy-conducting optical fiber 6, and can control the displacement platform to flexibly adjust the waist position of the pump beam through a feedback signal provided by the feedback system 7.
The resonant cavity 3 of the embodiment is located on one side of the laser coupling system 2 which is automatically controlled by a computer and is far away from the pump laser source 1; the resonant cavity 3 comprises a 1064nm laser high-reflection mirror 31 and a 1064nm laser coupling output mirror 32, wherein the 1064nm laser high-reflection mirror 31 is positioned between the laser coupling system 2 automatically controlled by a computer and the 1064nm laser coupling output mirror 32. Both sides of the 1064nm laser high-reflection mirror 31 are plated with 808nm laser high-transmission films, and one side of the 1064nm laser high-reflection mirror 31, which is close to the laser gain medium 4, is plated with a 1064nm laser high-reflection film
Wherein the laser gain medium 4 is positioned between the 1064nm laser high-reflection mirror 31 and the 1064nm laser coupling output mirror 32; the laser gain medium 4 may include Nd: YAG crystal 41 and Nd: YVO 4 A crystal 42, a Nd: YAG crystal 41 is positioned on the 1064nm laser high-reflection mirror 31 and a Nd: YVO 4 Between the crystals 42; nd: YAG crystal 41 and Nd: YVO 4 The crystal 42 serves as a gain medium to provide gain for the laser, and the pump laser source 1 is used for pumping and exciting the laser gain medium 4.
The acousto-optic Q-switch 5 is positioned between the laser gain medium 4 and the 1064nm laser coupling output mirror 32, and comprises an acousto-optic crystal 51 and a driving device 52. The 1064nm laser coupling output mirror 32 is coated with a 1064nm laser partial transmission film on the side close to the acousto-optic Q switch 5, and the 1064nm laser coupling output mirror 32 is coated with an anti-reflection film on the side far away from the acousto-optic Q switch 5. And the feedback system 7 is connected with the driving device 52 and the laser coupling system 2 automatically controlled by the computer and is used for acquiring a laser working repetition frequency signal and feeding the laser working repetition frequency signal back to the laser coupling system 2 automatically controlled by the computer.
In the embodiment, in order to achieve the goal that the laser can work efficiently in a continuous mode and in a Q-switched mode within a repetition frequency range of 5000Hz to 20000Hz, the parameters of the Nd: YAG crystal 41 are as follows: crystal size 3X 4mm 3 ，Nd 3+ Doping concentration 0.4-at.%; nd is YVO 4 The crystal 42 parameters are: crystal rulerInch 3X 10mm 3 ，Nd 3+ Doping concentration 0.5-at.%.
The multi-purpose 1064nm laser with the working system capable of being automatically switched provided by the embodiment is 3 × 3 × 4mm 3 ，Nd 3+ YAG crystal and 3X 10mm doped with Nd in 0.4-at% 3 ，Nd 3+ YVO doped with Nd of 0.5-at% 4 YAG crystal has longer upper energy level life, excellent mechanical performance and thermodynamic performance, and can realize high efficiency operation of laser at repetition frequency as low as 5000Hz and output of large monopulse energy. Using Nd: YVO 4 The crystal has the characteristics of large excited emission cross section, large absorption cross section and relatively short upper energy level service life, and can realize high average power and short pulse laser operation with repetition frequency as high as 20000 Hertz.
When the Q switch 5 does not work, the laser operates in a continuous mechanism to realize continuous laser output; when the Q-switch 5 works normally and the modulation frequency is low, the feedback system 7 feeds back the acquired low-repetition-frequency signal to the laser coupling system 2 automatically controlled by the computer, the laser coupling system 2 automatically controlled by the computer adjusts the position of the waist of the pump beam in the gain medium to be more deviated from the Nd: YAG crystal 41, so that the Nd: YAG crystal 41 as a main gain crystal can well absorb the pump beam, and the Nd: YVO 4 The crystal 42 is used as an auxiliary gain crystal, absorbs the pump light which is not completely absorbed by the Nd: YAG crystal 41, and fully exerts the advantages of the Nd: YAG crystal 41 to realize the high-efficiency Q-switched operation of the laser in low repetition frequency; when the Q switch 5 works normally and the modulation frequency is high, the feedback system 7 feeds back the acquired high repetition frequency signal to the laser coupling system 2 automatically controlled by the computer, and the laser coupling system 2 automatically controlled by the computer adjusts the position of the pumping beam waist in the gain medium to be more deviated from Nd: YVO 4 Crystal 42, ensuring Nd: YVO 4 The crystal 42 as a main gain crystal absorbs the pump light better, and the Nd: YAG crystal 41 as an auxiliary gain crystal absorbs part of the pump light at the front end, thereby fully utilizing Nd: YVO 4 The advantage of crystal 42 is to enable efficient Q-switched operation of the laser at high repetition rates.
The laser of this embodiment operates as follows:
the operation principle of different laser systems is as follows: the pump light emitted by the pump laser source 1 is collimated and focused by the laser coupling system 2 automatically controlled by a computer, and then the laser gain medium 4 in the resonant cavity 3 is excited to form population inversion, and under the feedback action of the resonant cavity 3, when the laser gain 4 is greater than the loss, the oscillation light oscillation starting is realized in the resonant cavity 3. Under the action of the acousto-optic Q switch 5 in the cavity, the modulation operation of the oscillation light is realized, and finally, the output of the pulse laser is realized by a 1064nm laser coupling output mirror 32; when the acousto-optic Q-switch 5 and the driving device 52 do not work continuously, the oscillation light in the resonant cavity 3 realizes continuous operation, and finally, the 1064nm laser coupling output mirror 32 realizes continuous laser output.
The principle of automatic switching working modes of the laser is as follows: the feedback system 7 connected with the driving device 52 of the acousto-optic Q switch 5 collects signals of the driving device 52 of the acousto-optic Q switch 5 in real time, obtains a laser real-time operation repetition frequency signal and sends the feedback signal to the laser coupling system 2 automatically controlled by the computer, and the laser coupling system 2 automatically controlled by the computer adjusts the distance between the laser coupling system and the laser gain medium 4 in real time according to the feedback signal, so that the purpose of adjusting the position of a pumping beam waist in the laser gain medium 4 in real time is achieved. The Nd: YAG crystal 41 and the Nd: YVO in the laser gain medium 4 are realized by adjusting the position of the pump beam waist in the laser gain medium 4 in real time 4 The pump light absorption proportion is adjusted by the crystal 42, so that respective advantages of the two crystals in different working modes are fully exerted, and the laser can efficiently run under different repetition frequencies.
It is to be noted that, in particular, the Nd: YAG crystal 41 and the Nd: YVO constituting the laser gain medium 4 The parameters of the crystal 42 (including the crystal length, the doping concentration, etc.) need to be reasonably designed and selected according to the practical application requirements (such as the repetition frequency range required to ensure high-efficiency operation), and any two crystals are not simply matched. Moreover, the choice of the two crystals presupposes that the central wavelengths of the stimulated emission are close.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited, and other modifications or equivalent substitutions made by the technical solutions of the present invention by the persons skilled in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A multipurpose 1064nm laser capable of automatically switching working modes comprises a pump laser source (1), and is characterized in that:
a laser coupling system (2) automatically controlled by a computer is arranged on the light outgoing side of the pump laser source (1);
the laser coupling system (2) consists of a displacement platform (21) automatically controlled by a computer and a coupling lens group (22) fixed on the displacement platform;
the coupling lens group (22) is provided with a resonant cavity (3) on one side far away from the pump laser source (1); the two ends of the resonant cavity (3) are provided with a 1064nm laser high-reflection mirror (31) and a 1064nm laser coupling output mirror (32), and the 1064nm laser high-reflection mirror (31) is positioned between the coupling lens group (22) and the 1064nm laser coupling output mirror (32);
a laser gain medium (4) is arranged between the 1064nm laser high-reflection mirror (31) and the 1064nm laser coupling output mirror (32); the laser gain medium (4) comprises two crystals, and the emission center wavelengths of the two crystals are 1064 nm;
an acousto-optic Q switch (5) is arranged between the laser gain medium (4) and the 1064nm laser coupling output mirror (32); the acousto-optic Q switch (5) consists of an acousto-optic crystal (51) and a driving device (52);
the drive device (52) and the laser coupling system (2) are connected with a feedback system (7).
2. The multi-purpose 1064nm laser according to claim 1, further comprising:
the laser gain medium (4) is formed by closely adhering Nd: YVO to Nd: YAG crystal (41) 4 A crystal (42), wherein the Nd is YAG crystal (41) is positioned on a 1064nm laser high-reflection mirror (31) and the Nd is YVO 4 Between the crystals (42).
3. The multi-purpose 1064nm laser according to claim 1, further comprising:
the laser coupling system (2) automatically controlled by the computer automatically controls the distance between the laser coupling system and the laser gain medium (4) through the computer according to a feedback signal provided by the feedback system (7).
4. The multi-purpose 1064nm laser device according to claim 1, wherein:
the signal of the feedback system (7) acquires a signal from a driving device (52) or an output laser signal or a signal providing information on the repetition frequency of the laser.
5. The multi-purpose 1064nm laser according to claim 1, further comprising:
both sides of the 1064nm laser high-reflection mirror (31) are plated with 808nm laser high-transmission films; a 1064nm laser high-reflection film is plated on one side, close to the laser gain medium (4), of the 1064nm laser high-reflection mirror (31); and one side of the 1064nm laser coupling output mirror (32) close to the driving device (52) of the acousto-optic Q switch (5) is plated with a 1064nm laser partial transmission film, and one side of the 1064nm laser coupling output mirror (32) far away from the driving device (52) of the acousto-optic Q switch (5) is plated with a 1064nm laser antireflection film.
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| CN216850735U (en) * | 2022-02-28 | 2022-06-28 | 齐鲁空天信息研究院 | Narrow-linewidth dual-wavelength solid laser |
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