CN109256658A - Infrared double-frequency laser system during one kind is tunable - Google Patents
Infrared double-frequency laser system during one kind is tunable Download PDFInfo
- Publication number
- CN109256658A CN109256658A CN201811301857.1A CN201811301857A CN109256658A CN 109256658 A CN109256658 A CN 109256658A CN 201811301857 A CN201811301857 A CN 201811301857A CN 109256658 A CN109256658 A CN 109256658A
- Authority
- CN
- China
- Prior art keywords
- frequency
- laser
- double
- infrared
- light
- 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.)
- Pending
Links
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
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0085—Modulating the output, i.e. the laser beam is modulated outside the laser cavity
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/11—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The present invention provides it is a kind of it is tunable in infrared double-frequency laser system, double-frequency laser is realized by the method that acousto-optic crsytal shift frequency closes beam again using single-frequency laser, by being injected in optical parametric oscillator after fiber amplifier, the output of infrared double-frequency laser in realization；In addition, the present invention by change acousto-optic crsytal driving frequency, can be realized output in infrared double-frequency laser beat frequency it is tunable.
Description
Technical field
The present invention relates to solid state laser technical fields, and in particular to infrared double-frequency laser system during one kind is tunable.
Background technique
3-5 μm of mid-infrared laser is strong to smog, atmosphere penetration power, and transmission attenuation is very in nitrogen and oxygen in an atmosphere
It is low, it is the wave band of propagation in atmosphere window, therefore in infrared laser guidance, coherent infrared radar, infrared laser communication, laser orientation
The military fields such as Infrared jamming have important application.Meanwhile there are many molecular vibration spectral lines for 3-5 mu m waveband, in spectrum point
Analysis and environmental quality monitoring field also have important application.Double-frequency laser is mainly used in coherent detection field, is swashed with double frequency
The beat signal of light is detection medium, has stronger anti-atmospheric interference ability while guaranteeing very high spatial resolution,
Its signal processing system is using mature microwave signal process system simultaneously.Therefore, 3-5 μm of mid-infrared laser of double frequency be in it is infrared
The important laser source of coherent laser radar and Difference Absorption thunder.Optical parametric oscillation is to realize the important method of mid-infrared laser, tool
Have the advantages that wavelength tuning range is big, high conversion efficiency, structure is simple, stability is good.Current optical parametric oscillator is mainly
Single-frequency optical parametric oscillation also has been reported that with the dual wavelength light parametric oscillation of larger wavelength difference, but there has been no red in tunable
The generation system of outer double-frequency laser.
Summary of the invention
In view of this, the present invention provides it is a kind of it is tunable in infrared double-frequency laser system, it is tunable beat frequency can be generated
In infrared double frequency ideler frequency light.
In order to achieve the above objectives, the technical solution of the present invention is as follows:
It is a kind of it is tunable in infrared double-frequency laser system, including single-frequency infrared laser output module 21, fiber optic splitter 3,
Acousto-optic crsytal 4, optical-fiber bundling device 6, fiber optic power amplifier 7 and optical parametric oscillator 20；
The single-frequency infrared laser output module 21 is f for output frequency0Single-frequency infrared laser；
The fiber optic splitter 3 is used to that the single-frequency infrared laser to be divided into the first single-frequency laser according to preset splitting ratio
With the second single-frequency laser, wherein first single-frequency laser is directly incident on optical-fiber bundling device 6, and second single-frequency laser enters
Optical-fiber bundling device 6 is again incident on after being mapped to acousto-optic crsytal 4；
The acousto-optic crsytal 4 is used to the frequency transformation of the second single-frequency laser be f0+fRF, wherein fRFFor acousto-optic crsytal 4
Driving frequency；
The optical-fiber bundling device 6 is used to first single-frequency laser and frequency transformation be f0+fRFThe second single-frequency laser
Synthesize double-frequency laser all the way；
After the fiber optic power amplifier 7 is used to the double-frequency laser carrying out power amplification, it is incident on the optical parameter
Oscillator 20；
The optical parametric oscillator 20 is for infrared double frequency ideler frequency in converting the double-frequency laser after power amplification to
Light and near-infrared double frequency signal light, wherein the near-infrared double frequency signal light vibrates in optical parametric oscillator 20, it is described in it is red
Outer double frequency ideler frequency light is exported from the optical parametric oscillator 20, thus infrared double-frequency laser in obtaining.
Further, the optical parametric oscillator 20 includes the first plano-concave hysteroscope 13, the first plane hysteroscope 14, optical parameter vibration
Swing crystal 15, the second plane hysteroscope 17 and the second plano-concave hysteroscope 18；
The double-frequency laser after power amplification is incident on optical parametric oscillation crystalline substance by the first plano-concave hysteroscope 13
After body 15, infrared double frequency ideler frequency light and near-infrared double frequency signal light from the output of optical parametric oscillation crystal 15；
The second plano-concave hysteroscope 18 is for transmiting infrared double frequency ideler frequency light in described, and by the near-infrared two-frequency signal
Light is reflected into the first plane hysteroscope 14, then the near-infrared double frequency signal light passes sequentially through the first plane hysteroscope 14 and the second plane
After hysteroscope 17 is reflected back the first plano-concave hysteroscope 13, incident parameter oscillating crystal 15, is realized in optical parametric oscillator 20 again
Oscillation.
Further, it is a kind of it is tunable in infrared double-frequency laser system, further include temperature controlling stove 16；
Temperature of the temperature controlling stove 16 for changing optical parametric oscillation crystal 15, infrared double frequency ideler frequency light output wave in realization
Long is tunable.
Further, the single-frequency infrared laser output module 21 includes 808nm semiconductor laser 1 and Nd:YAG crystal
2；
Nd:YAG crystal 2 described in the laser pump (ing) that the 808nm semiconductor laser 1 is emitted, obtaining frequency is f0's
1064nm single-frequency infrared laser.
Further, it is a kind of it is tunable in infrared double-frequency laser system, further include germanium wafer 19；
The germanium wafer 19 is used to filter out the other in addition to infrared double frequency ideler frequency light in of the output of optical parametric oscillator 20
Laser.
Further, it is a kind of it is tunable in infrared double-frequency laser system, further include radio frequency source driving 5；
The radio frequency source driving 5 sends out second single-frequency laser in acousto-optic crsytal 4 for driving the acousto-optic crsytal 4
Raw frequency transformation.
Further, it is a kind of it is tunable in infrared double-frequency laser system, further include fiber collimating lenses 8, Glan prism 9,
Half-wave plate 10, first laser lens 11 and second laser lens 12；
Before the double-frequency laser after power amplification is incident on the optical parametric oscillator 20, it is successively incident on optical fiber
Collimation lens 8, Glan prism 9, half-wave plate 10, first laser lens 11 and second laser lens 12；
The fiber collimating lenses 8 are used to the double-frequency laser after power amplification being converted to collimation laser；
The Glan prism 9 is used to the collimation laser being converted to linearly polarized light；
The half-wave plate 10 is used to adjust the polarization direction of the linearly polarized light, and the linearly polarized light is made to become vertical polarization
Light；
The first laser lens 11 are used to adjust the spot size of the orthogonal polarized light with second laser lens 12.
Further, the default splitting ratio is 1:2.
The utility model has the advantages that
1, the present invention provides it is a kind of it is tunable in infrared double-frequency laser system, acousto-optic crsytal shifting is passed through using single-frequency laser
The method that frequency closes beam again realizes double-frequency laser, by being injected in optical parametric oscillator after fiber amplifier, infrared double frequency in realization
The output of laser；In addition, driving frequency of the present invention by change acousto-optic crsytal, can be realized infrared double-frequency laser in output and claps
Frequency it is tunable.
2, it includes optical parametric oscillation crystal that the present invention, which provides optical parametric oscillator, and the temperature of optical parametric oscillation crystal is in
The wavelength of infrared double frequency ideler frequency light is related, by change optical parametric oscillation crystal temperature and polarization cycle, may be implemented in it is red
Outer double frequency ideler frequency light output wavelength it is tunable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of infrared double-frequency laser system during one kind provided by the invention is tunable；
Fig. 2 is the structural schematic diagram of infrared double-frequency laser system during another kind provided by the invention is tunable；
1-808nm semiconductor laser, 2-Nd:YAG crystal, 3- fiber optic splitter, 4- acousto-optic crsytal, the driving of 5- acousto-optic
Source, 6- optical-fiber bundling device, 7- fiber optic power amplifier, 8- fiber collimating lenses, 9- Glan prism, 10- half-wave plate, 11- first
Laser lens, 12- second laser lens, the first plano-concave of 13- hysteroscope, the first plane of 14- hysteroscope, 15- optical parametric oscillation crystal,
16- temperature controlling stove, the second plane of 17- hysteroscope, the second plano-concave of 18- hysteroscope, 19- germanium wafer.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Embodiment one
Referring to Fig. 1, which is the structural schematic diagram of infrared double-frequency laser system during one kind provided in this embodiment is tunable.
Infrared double-frequency laser system during one kind is tunable, including single-frequency infrared laser output module 21, fiber optic splitter 3, acousto-optic crsytal
4, optical-fiber bundling device 6, fiber optic power amplifier 7 and optical parametric oscillator 20；
The single-frequency infrared laser output module 21 is f for output frequency0Single-frequency infrared laser；
The fiber optic splitter 3 is used to that the single-frequency infrared laser to be divided into the first single-frequency laser according to preset splitting ratio
With the second single-frequency laser, wherein first single-frequency laser is directly incident on optical-fiber bundling device 6, and second single-frequency laser enters
Optical-fiber bundling device 6 is again incident on after being mapped to acousto-optic crsytal 4；
Optionally, the default splitting ratio is 1:2, respectively 1/3 end and 2/3 end；Wherein 2/3 end passes through acousto-optic crsytal 4
Enter optical-fiber bundling device afterwards；1/3 end is directly entered optical-fiber bundling device 6；
The acousto-optic crsytal 4 is used to the frequency transformation of the second single-frequency laser be f0+fRF, wherein fRFFor acousto-optic crsytal 4
Driving frequency；
The optical-fiber bundling device 6 is used to first single-frequency laser and frequency transformation be f0+fRFThe second single-frequency laser
Synthesize double-frequency laser all the way；
After the fiber optic power amplifier 7 is used to the double-frequency laser carrying out power amplification, it is incident on the optical parameter
Oscillator 20；
It should be noted that the double-frequency laser of optical-fiber bundling device output, power is mW magnitude；Utilize fiber optic power amplifier
Pump light by the power amplification of double-frequency laser to tens W magnitudes, as optical parametric oscillator.By changing acousto-optic crsytal 4
The beat frequency of the adjustable double-frequency laser of frequency difference.
The optical parametric oscillator 20 is for infrared double frequency ideler frequency in converting the double-frequency laser after power amplification to
Light and near-infrared double frequency signal light, wherein the near-infrared double frequency signal light vibrates in optical parametric oscillator 20, it is described in it is red
Outer double frequency ideler frequency light is exported from the optical parametric oscillator 20, thus infrared double-frequency laser in obtaining.
Embodiment two
Based on above embodiments, the present embodiment provides it is another it is tunable in infrared double-frequency laser system.Referring to fig. 2, should
Figure is the structural schematic diagram of infrared double-frequency laser system during another kind provided in this embodiment is tunable.
It is a kind of it is tunable in infrared double-frequency laser system, including single-frequency infrared laser output module 21, fiber optic splitter 3,
Acousto-optic crsytal 4, radio frequency source driving 5, optical-fiber bundling device 6, fiber optic power amplifier 7, fiber collimating lenses 8, Glan prism 9, half
Wave plate 10, first laser lens 11, second laser lens 12, temperature controlling stove 16, germanium wafer 19 and optical parametric oscillator 20.
Further, the single-frequency infrared laser output module 21 includes 808nm semiconductor laser 1 and Nd:YAG crystal
2；
Nd:YAG crystal 2 described in the laser pump (ing) that the 808nm semiconductor laser 1 is emitted, obtaining frequency is f0's
1064nm single-frequency infrared laser.
The fiber optic splitter 3 is used to according to preset splitting ratio be f by the frequency01064nm single-frequency infrared laser
It is divided into the first single-frequency laser and the second single-frequency laser, wherein first single-frequency laser is directly incident on optical-fiber bundling device 6, institute
It states after the second single-frequency laser is incident on acousto-optic crsytal 4 and is again incident on optical-fiber bundling device 6.
The acousto-optic crsytal 4 is used to the frequency transformation of the second single-frequency laser be f0+fRF, wherein fRFFor acousto-optic crsytal 4
Driving frequency.
The radio frequency source driving 5 sends out second single-frequency laser in acousto-optic crsytal 4 for driving the acousto-optic crsytal 4
Raw frequency transformation.
The optical-fiber bundling device 6 is used to first single-frequency laser and frequency transformation be f0+fRFThe second single-frequency laser
Synthesize double-frequency laser all the way.
After the fiber optic power amplifier 7 is used to the double-frequency laser carrying out power amplification, it is successively incident on optical fiber standard
Straight lens 8, Glan prism 9, half-wave plate 10, first laser lens 11 and second laser lens 12.
The fiber collimating lenses 8 are used to the double-frequency laser after power amplification being converted to collimation laser.
It should be noted that after the double-frequency laser is carried out power amplification due to the fiber optic power amplifier 7, output
Laser be diverging, it is therefore desirable to the double-frequency laser of diverging is converted into collimation laser with fiber collimating lenses 8.
The Glan prism 9 is used to the collimation laser being converted to linearly polarized light.
The half-wave plate 10 is used to adjust the polarization direction of the linearly polarized light, and the linearly polarized light is made to become vertical polarization
Light.
The first laser lens group 11 is used to adjust the hot spot of the orthogonal polarized light with second laser lens group 12
Size.
It should be noted that spot size is not the bigger the better there are an optimal value, nor it is the smaller the better, and light
Spot size influences the delivery efficiency of infrared double-frequency laser in final, then fiber collimating lenses 8, first laser lens 11 and the
Dual-laser lens 12 cooperate to modulation spot size, so that actual facula unbounded size is close to the optimal value.
It should be noted that polarization direction be also in infrared double-frequency laser one of the influencing factor of delivery efficiency.
After the orthogonal polarized light that spot size is adjusted is from the second laser lens 12 outgoing, it is incident on the beche-de-mer without spike
Measure oscillator 20.
Further, the optical parametric oscillator 20 includes the first plano-concave hysteroscope 13, the first plane hysteroscope 14, optical parameter vibration
Swing crystal 15, the second plane hysteroscope 17 and the second plano-concave hysteroscope 18；
The double-frequency laser after power amplification is incident on optical parametric oscillation crystalline substance by the first plano-concave hysteroscope 13
After body 15, infrared double frequency ideler frequency light and near-infrared double frequency signal light from the output of optical parametric oscillation crystal 15；
The second plano-concave hysteroscope 18 is for transmiting infrared double frequency ideler frequency light in described, and by the near-infrared two-frequency signal
Light is reflected into the first plane hysteroscope 14, then the near-infrared double frequency signal light passes sequentially through the first plane hysteroscope 14 and the second plane
After hysteroscope 17 is reflected back the first plano-concave hysteroscope 13, incident parameter oscillating crystal 15, is realized in optical parametric oscillator 20 again
Oscillation.
It should be noted that the frequency of the double-frequency laser after power amplification is respectively f0With f0+fRF, optical parametric oscillation
Frequency is f by crystal 150Single-frequency laser part be transformed to respectively frequency be fs1And fi1Signal light and ideler frequency light, be by frequency
f0+fRFSingle-frequency laser part differentiate be transformed to frequency be fs2And fi2Signal light and ideler frequency light, wherein frequency fi1And fi2
Laser constitute in infrared double frequency ideler frequency light, frequency fs1And fs2Laser constitute near-infrared double frequency signal light, frequency fi1With
fi2In infrared double frequency ideler frequency light transmitted away from the second plano-concave hysteroscope 18, frequency fs1And fs2Near-infrared double frequency signal light exists
First plano-concave hysteroscope 13, the first plane hysteroscope 14, optical parametric oscillation crystal 15, the second plane hysteroscope 17 and the second plano-concave hysteroscope
It is shaken back and forth between 18.
Further, the wavelength of infrared double frequency ideler frequency light and the wavelength of near-infrared double frequency signal light and optical parameter are shaken in described
The temperature for swinging crystal 15 is related；
The temperature controlling stove 16 is used to place the optical parametric oscillation crystal 15, changes the temperature of optical parametric oscillation crystal 15,
Infrared double frequency ideler frequency light output wavelength is tunable in realization.Wherein, the temperature range of temperature controlling stove 16 is at 20 °~110 °, temperature
It is higher, in infrared double frequency ideler frequency light wavelength it is shorter, the wavelength of near-infrared double frequency signal light is longer.
The germanium wafer 19 is used to filter out the other in addition to infrared double frequency ideler frequency light in of the output of the second plano-concave hysteroscope 18
Laser, such as the single-frequency infrared laser that single-frequency infrared laser output module 21 exports, the double-frequency laser that optical-fiber bundling device 6 exports,
Or the second near-infrared double frequency signal light that leaks of plano-concave hysteroscope 18, these three light may travel into light with laser
Parametric oscillator 20.
The method that the output of double frequency mid-infrared laser is realized based on the present embodiment is described in detail below.
Infrared double-frequency laser system pumps beche-de-mer without spike using 1064nm double-frequency laser during one kind provided in this embodiment is tunable
The method for measuring oscillator realizes the output of double frequency mid-infrared laser, and this method specifically comprises the following steps:
Step 1: double frequency 1064nm laser is by 808nm semiconductor laser 1, monoblock and non-planar annular chamber Nd:YAG crystal
2, acousto-optic crsytal 4, fiber optic splitter 3, optical-fiber bundling device 6 and fiber optic power amplifier 7 form；
It is f that 808nm semiconductor laser 1, which pumps 2 output frequency of monoblock and non-planar annular chamber Nd:YAG crystal,01064nm
Single-frequency laser.
1064nm single-frequency laser is divided into two parts, splitting ratio 1:2, respectively 1/3 end and 2/3 end by fiber optic splitter 3；
Wherein 2/3 end is by entering optical-fiber bundling device 3 after frequency shifter；The driving frequency of frequency shifter is fRF, then 2/3 end is after frequency shifter
Frequency becomes f0+fRF；1/3 end is directly entered optical-fiber bundling device 6.
Optical-fiber bundling device 6 exports 1064nm double-frequency laser, and power is mW magnitude；Using fiber optic power amplifier by 1064nm
Pump light of the power amplification of double-frequency laser to tens W magnitudes, as optical parametric oscillator 20.By changing acousto-optic crsytal 4
The beat frequency of the adjustable 1064nm double-frequency laser of frequency difference.
Step 2: after 1064nm double-frequency laser is exported by fiber optic power amplifier 7, fiber collimating lenses 8, lattice are passed sequentially through
Blue prism 9, half-wave plate 10, first laser lens 11, second laser lens 12 focus on MgO:PPLN optical parametric oscillation crystal 15.
First plano-concave hysteroscope 13, the first plane hysteroscope 14, the second plane hysteroscope 17 and the second plano-concave hysteroscope 18 are to close red
Outer two-frequency signal light is high anti-, constitutes near-infrared double frequency signal light single-resonant optical parametric oscillator.
The optical parametric oscillation crystal 15 being placed in temperature controlling stove 16 by 1064nm double-frequency laser be converted into infrared double frequency it is not busy
Frequency light and near-infrared double frequency signal light.Near-infrared double frequency signal light in the intracavitary oscillation of laser resonance, in infrared ideler frequency light by second
Plano-concave hysteroscope 18 exports, via infrared double frequency ideler frequency light in 19 filtering pump light of germanium wafer and other spuious light outputs.It is red due in
The temperature and polarization cycle of the wavelength of outer double frequency ideler frequency light and the wavelength of near-infrared double frequency signal light and optical parametric oscillation crystal 15
It is related, the tunable of output wavelength may be implemented by the temperature and polarization cycle that change optical parametric oscillation crystal.
The embodiment of the present invention has obtained following result by experiment: output laser be in infrared double frequency ideler frequency light, power is
W magnitude, by changing the temperature and polarization cycle of MgO:PPLN optical parametric oscillation crystal 15, output wavelength tuning range is 3-
3.8 μm, change the frequency of the driving acousto-optic crsytal 4 of radio frequency source driving 5, double-frequency laser beat frequency tuning range is 125-175MHz.
First plano-concave hysteroscope 13,18 plane of the second plano-concave hysteroscope plating 1064nm (R < 1%)/1400-1750nm (R < 1%)/
2800-4300nm (R<10%), concave surface plating 1064nm (R<1%)/1400-1750nm (R>99.8%)/2800-4300nm (R<
10%).First plane hysteroscope 14,17 inner surface of the second plane hysteroscope plating 1064nm (R<1%)/1400-1750nm (R>
99.8%) 1064nm (R < 1%)/1400-1750nm (R < 1%)/2800- is plated in/2800-4300nm (R < 10%), outer surface
4300nm (R < 10%).15 front/rear end of optical parametric oscillation crystal plating 1064nm (R < 1%)/1400-1750nm (R < 1%)/
2800-4300nm (R < 10%).
First plano-concave hysteroscope 13, the first plane hysteroscope 14, the material of the second plane hysteroscope 17 are H-K9L, the second flat-concave cavity
The material of mirror 18 is CaF2.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
- Infrared double-frequency laser system during 1. one kind is tunable, which is characterized in that including single-frequency infrared laser output module (21), light Fine beam splitter (3), acousto-optic crsytal (4), optical-fiber bundling device (6), fiber optic power amplifier (7) and optical parametric oscillator (20)；The single-frequency infrared laser output module (21) is f for output frequency0Single-frequency infrared laser；The fiber optic splitter (3) be used for according to preset splitting ratio by the single-frequency infrared laser be divided into the first single-frequency laser and Second single-frequency laser, wherein first single-frequency laser is directly incident on optical-fiber bundling device (6), and second single-frequency laser enters Optical-fiber bundling device (6) are again incident on after being mapped to acousto-optic crsytal (4)；The acousto-optic crsytal (4) is used to the frequency transformation of the second single-frequency laser be f0+fRF, wherein fRFFor acousto-optic crsytal (4) Driving frequency；The optical-fiber bundling device (6) is used to first single-frequency laser and frequency transformation be f0+fRFThe second single-frequency laser close At double-frequency laser all the way；After the fiber optic power amplifier (7) is used to the double-frequency laser carrying out power amplification, it is incident on the optical parameter vibration Swing device (20)；The optical parametric oscillator (20) is for infrared double frequency ideler frequency light in converting the double-frequency laser after power amplification to With near-infrared double frequency signal light, wherein near-infrared double frequency signal light oscillation in the optical parametric oscillator (20), it is described in it is red Outer double frequency ideler frequency light output from the optical parametric oscillator (20), thus infrared double-frequency laser in obtaining.
- Infrared double-frequency laser system during 2. one kind as described in claim 1 is tunable, which is characterized in that the optical parametric oscillation Device (20) includes the first plano-concave hysteroscope (13), the first plane hysteroscope (14), optical parametric oscillation crystal (15), the second plane hysteroscope (17) and the second plano-concave hysteroscope (18)；The double-frequency laser after power amplification is incident on optical parametric oscillation crystal by the first plano-concave hysteroscope (13) (15) after, infrared double frequency ideler frequency light and near-infrared double frequency signal light from optical parametric oscillation crystal (15) output；The second plano-concave hysteroscope (18) is for transmiting infrared double frequency ideler frequency light in described, and by the near-infrared double frequency signal light It is reflected into the first plane hysteroscope (14), then the near-infrared double frequency signal light passes sequentially through the first plane hysteroscope (14) and second flat After face hysteroscope (17) is reflected back the first plano-concave hysteroscope (13), incident parameter oscillating crystal (15), realize and shake in optical parameter again Swing the oscillation in device (20).
- Infrared double-frequency laser system during 3. one kind as claimed in claim 2 is tunable, which is characterized in that further include temperature controlling stove (16)；Temperature of the temperature controlling stove (16) for changing optical parametric oscillation crystal (15), infrared double frequency ideler frequency light output wave in realization Long is tunable.
- Infrared double-frequency laser system during 4. one kind as described in claim 1 is tunable, which is characterized in that the single-frequency is infrared to swash Light output module (21) includes 808nm semiconductor laser (1) and Nd:YAG crystal (2)；Nd:YAG crystal (2) described in the laser pump (ing) of 808nm semiconductor laser (1) outgoing, obtaining frequency is f0's 1064nm single-frequency infrared laser.
- Infrared double-frequency laser system during 5. one kind as described in claim 1 is tunable, which is characterized in that further include germanium wafer (19)；The germanium wafer (19) is used to filter out the other in addition to infrared double frequency ideler frequency light in of the optical parametric oscillator (20) output Laser.
- Infrared double-frequency laser system during 6. one kind as described in claim 1 is tunable, which is characterized in that further include that radio frequency source drives Dynamic (5)；The radio frequency source driving (5) makes second single-frequency laser in acousto-optic crsytal (4) for driving the acousto-optic crsytal (4) Occurrence frequency transformation.
- Infrared double-frequency laser system during 7. one kind as described in claim 1 is tunable, which is characterized in that further include fiber optic collimator Lens (8), Glan prism (9), half-wave plate (10), first laser lens (11) and second laser lens (12)；Before the double-frequency laser after power amplification is incident on the optical parametric oscillator (20), it is successively incident on optical fiber standard Straight lens (8), Glan prism (9), half-wave plate (10), first laser lens (11) and second laser lens (12)；The fiber collimating lenses (8) are used to the double-frequency laser after power amplification being converted to collimation laser；The Glan prism (9) is used to the collimation laser being converted to linearly polarized light；The half-wave plate (10) is used to adjust the polarization direction of the linearly polarized light, and the linearly polarized light is made to become vertical polarization Light；The first laser lens (11) and second laser lens (12) are used to adjust the spot size of the orthogonal polarized light.
- Infrared double-frequency laser system during 8. one kind as described in claim 1 is tunable, which is characterized in that the default splitting ratio For 1:2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301857.1A CN109256658A (en) | 2018-11-02 | 2018-11-02 | Infrared double-frequency laser system during one kind is tunable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301857.1A CN109256658A (en) | 2018-11-02 | 2018-11-02 | Infrared double-frequency laser system during one kind is tunable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109256658A true CN109256658A (en) | 2019-01-22 |
Family
ID=65042915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811301857.1A Pending CN109256658A (en) | 2018-11-02 | 2018-11-02 | Infrared double-frequency laser system during one kind is tunable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109256658A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492340A (en) * | 2019-08-21 | 2019-11-22 | 山东大学 | Infrared double-frequency laser system during one kind is tunable |
| CN111082299A (en) * | 2019-12-16 | 2020-04-28 | 北京理工大学 | All-solid-state tunable intermediate infrared frequency comb generation device |
| CN111297346A (en) * | 2020-03-05 | 2020-06-19 | 深圳大学 | Photoacoustic Doppler blood flow velocity and blood oxygen content measuring system and measuring method thereof |
| CN112864782A (en) * | 2021-01-13 | 2021-05-28 | 密尔医疗科技(深圳)有限公司 | Air-cooled dual-waveband wide-tuning narrow linewidth laser |
| CN115663581A (en) * | 2022-10-25 | 2023-01-31 | 中国科学院上海光学精密机械研究所 | Single-frequency dual-wavelength double-pulse optical parametric oscillation laser |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204719233U (en) * | 2015-06-18 | 2015-10-21 | 北京理工大学 | A kind of target detection unit based on double-frequency laser |
| CN106711745A (en) * | 2017-02-26 | 2017-05-24 | 中国科学院上海光学精密机械研究所 | Wide-tuning and narrow-linewidth nanosecond pulse double-resonance medium-infrared parameter oscillator |
-
2018
- 2018-11-02 CN CN201811301857.1A patent/CN109256658A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204719233U (en) * | 2015-06-18 | 2015-10-21 | 北京理工大学 | A kind of target detection unit based on double-frequency laser |
| CN106711745A (en) * | 2017-02-26 | 2017-05-24 | 中国科学院上海光学精密机械研究所 | Wide-tuning and narrow-linewidth nanosecond pulse double-resonance medium-infrared parameter oscillator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492340A (en) * | 2019-08-21 | 2019-11-22 | 山东大学 | Infrared double-frequency laser system during one kind is tunable |
| CN111082299A (en) * | 2019-12-16 | 2020-04-28 | 北京理工大学 | All-solid-state tunable intermediate infrared frequency comb generation device |
| CN111082299B (en) * | 2019-12-16 | 2021-06-04 | 北京理工大学 | All-solid-state tunable intermediate infrared frequency comb generation device |
| CN111297346A (en) * | 2020-03-05 | 2020-06-19 | 深圳大学 | Photoacoustic Doppler blood flow velocity and blood oxygen content measuring system and measuring method thereof |
| CN111297346B (en) * | 2020-03-05 | 2023-12-19 | 深圳大学 | Photoacoustic Doppler blood flow velocity and blood oxygen content measurement system and measurement method thereof |
| CN112864782A (en) * | 2021-01-13 | 2021-05-28 | 密尔医疗科技(深圳)有限公司 | Air-cooled dual-waveband wide-tuning narrow linewidth laser |
| CN115663581A (en) * | 2022-10-25 | 2023-01-31 | 中国科学院上海光学精密机械研究所 | Single-frequency dual-wavelength double-pulse optical parametric oscillation laser |
| CN115663581B (en) * | 2022-10-25 | 2023-12-01 | 中国科学院上海光学精密机械研究所 | Single-frequency dual-wavelength dual-pulse optical parametric oscillation laser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109256658A (en) | Infrared double-frequency laser system during one kind is tunable | |
| CN106711745B (en) | Infrared parametric oscillator in broad tuning, narrow linewidth nanosecond pulse double resonance | |
| CN106856292B (en) | 2 mu m waveband pure-tone pulse optical parametric oscillator of injection seeded based on heterodyne beat locking | |
| CN203595658U (en) | Optical chamber module component | |
| CN110048298B (en) | Light and small-sized long-wave infrared laser generating device | |
| CN108183387A (en) | A kind of optical parametric oscillator system for laser | |
| CN112688147B (en) | Pre-chirp management femtosecond laser pulse amplification device and system | |
| CN113126385B (en) | Device for generating high-order orbital angular momentum entangled state of two-component continuous variable | |
| CN105896256A (en) | Dual-wavelength tunable intermediate infrared pulse fiber laser and method for obtaining laser | |
| CN109217090B (en) | Continuous light-optical frequency comb locking device and locking means | |
| CN111474802A (en) | Device for simultaneously generating compressed-state light field and entangled-state light field | |
| CN108011286B (en) | Device for generating sub-kHz low-frequency intensity difference compression based on cesium atom ensemble | |
| CN116387954B (en) | Frequency locking method based on combination of optical feedback and PDH | |
| CN109217095A (en) | Middle infrared pulsed lasers and its working method | |
| CN102354897B (en) | External secondary cascading difference frequency terahertz light source generation device and implementation method | |
| CN105159008A (en) | Application of nonlinear optical device with lanthanum gallium niobate crystals as middle-infrared band | |
| CN108155553B (en) | Fine adjustable optical parametric oscillator with fast gain band switching | |
| CN208299193U (en) | A kind of mid and far infrared laser output device | |
| CN104659648B (en) | Neodymium-doped barium silicate is from frequency multiplication ultrashort pulse laser | |
| CN106340797B (en) | 2 μm of tunable laser of annular chamber optical parametric oscillator are constituted based on body grating | |
| CN213602178U (en) | Parameter oscillation optical system | |
| CN113078536B (en) | Lateral pumping Nd-MgO-PPLN mid-infrared laser and double-prism wavelength control method thereof | |
| CN109149345A (en) | A kind of system that the medium-wave infrared laser using laser difference frequency technology generation wavelength not less than 3.8 microns exports | |
| CN106684681A (en) | Single-end pump near and middle infrared dual-band optical fiber laser and stable output method | |
| CN201549762U (en) | Intermediate infrared laser system |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190122 |