CN106921110A - The intracavity pump continuous wave optical parametric oscillator of diode-end-pumped - Google Patents
The intracavity pump continuous wave optical parametric oscillator of diode-end-pumped Download PDFInfo
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- CN106921110A CN106921110A CN201710199715.8A CN201710199715A CN106921110A CN 106921110 A CN106921110 A CN 106921110A CN 201710199715 A CN201710199715 A CN 201710199715A CN 106921110 A CN106921110 A CN 106921110A
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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
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/041—Optical pumping
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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
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/0604—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium comprising a non-linear region, e.g. generating harmonics of the laser frequency
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Abstract
The invention discloses a kind of intracavity pump continuous wave optical parametric oscillator of diode-end-pumped, including：Single transverse mode semiconductor laser, condenser lens, Input coupling mirror, laser gain crystal, laser concave mirror, dichroic mirror, the first concave mirror, nonlinear crystal, the second concave mirror, OPO flashlights output coupling mirror and OPO pump light high reflective mirrors；The OPO pump lights that laser gain crystal is produced focus on laser gain crystal in the presence of Input coupling mirror and laser concave mirror；Laser gain crystal is Yb:KYW or Yb:KGW.The present invention mixes ytterbium gain medium using three-level, and laser produces the quantum defect of process smaller, can obtain power conversion efficiency higher, while the heat produced during laser is produced is less；Using single transverse mode high brightness semiconductor laser as pumping source, population inversion efficiently can be obtained in three-level laser gain media；Using single-transverse mode laser as pumping source another advantage is that the laser that can obtain occupational noise is exported.
Description
Technical field
The present invention relates to optical parametric oscillator field, more particularly, to pump in a kind of chamber of diode-end-pumped
Pu continuous wave optical parametric oscillator.
Background technology
Optical parametric oscillator (Optical Parametric Oscillator, OPO) utilizes second order nonlinear effect, will
Incident laser (referred to as pump light) is converted to two different shoot lasers of frequency, and one of frequency the higher person is referred to as signal
Light, the lower referred to as ideler frequency light of another frequency, the frequency of pump light is equal to the frequency sum of flashlight and ideler frequency light；OPO is used
In the output waveband for expanding laser emission, the laser emission of wideband adjustable is realized.
Be placed in nonlinear crystal in the resonator of pump laser by the optical parametric oscillator of intracavity pump；Using resonator
Interior high power density, can realize the Low threshold vibration of continuous wave optical parametric oscillator；By controlling Non-linear coupling, in chamber
The optical parametric oscillator of pumping can obtain high power conversion efficiency.Document G.A.Turnbull, M.H.Dunn, and
M.Ebrahimzadeh, " Continuous-wave, intracavity optical parametric oscillators an
Analysis of power characteristics, " Appl.Phys.B 66 (6), 701-710 (1998) gives to this
Detail discussion.
Existing intracavity pump continuous wave optical parametric oscillator generally uses multimode semiconductor laser as the outer of laser
Boundary's pumping source；In order to realize population inversion, the gain medium of four-level system, such as Nd are generally used:YVO4(neodymium-doped vanadium
Sour yttrium crystal), it uses the laser of the multimode semiconductor laser pumping generation 1064nm of 808nm.Use four-level system
Major defect is that laser produces the quantum defect of process larger, during causing relatively low power conversion efficiency and laser to produce
More heat is produced.Additionally, another inferior position of multimode pumping source is higher intensity noise, cause the continuous glistening light of waves of intracavity pump
Parametric oscillator power output it is unstable.
The content of the invention
It is an object of the invention to provide a kind of intracavity pump single resonance company of single transverse mode semiconductor laser pump-coupling
Continuous glistening light of waves parametric oscillator, overcome in the prior art due to multimode laser power output is unstable and gain medium on energy
The unstable problem of optical parametric oscillator power output caused by life time of the level is more many than the long lifespan of pump light, and improve existing skill
Laser produces the problem that process is produced with more heat, OPO power conversion efficiencies are low in art.
The invention provides a kind of intracavity pump continuous wave optical parametric oscillator of diode-end-pumped, including：It is single
Transverse mode semiconductor laser, condenser lens, Input coupling mirror, laser gain crystal, laser concave mirror, dichroic mirror, the first concave surface
Mirror, nonlinear crystal, the second concave mirror, OPO flashlights output coupling mirror and OPO pump light high reflective mirrors；Single transverse mode semiconductor swashs
The laser of light device output focuses on laser gain crystal after sequentially passing through condenser lens and Input coupling mirror along light path；Laser increases
That the OPO pump lights are reached after the Input coupling mirror foveal reflex is high in a direction in the OPO pump lights that beneficial crystal is produced
Fan Jing centers simultaneously cause the light backtracking；Other direction is by after the laser concave mirror foveal reflex in OPO pump lights
Perpendicular through the dichroic mirror, then by after the first concave mirror foveal reflex perpendicular through the nonlinear crystal after reach
The second concave mirror center simultaneously causes the light backtracking；One in the OPO flashlights produced by the nonlinear crystal
Direction through first concave mirror to the dichroic mirror, then by vertically reaching OPO letter after dichroic mirror reflection
Number light output coupling mirror center simultaneously causes the light backtracking；Other direction reaches second concave mirror in OPO flashlights
Center simultaneously causes the light backtracking.
The present invention is to realize OPO signals and pump light described using the purpose of the first concave mirror and second concave mirror
Focusing in nonlinear crystal, to reduce the oscillation threshold of OPO.
Further, the OPO pump lights that laser gain crystal is produced are in the Input coupling mirror and laser concave mirror
Laser gain crystal is focused under effect；The OPO flashlights and OPO pump lights produced in nonlinear crystal are in the first concave mirror
Nonlinear crystal is focused on in the presence of the second concave mirror.
Further, laser gain crystal is Yb:KYW or Yb:KGW.
Further, the single horizontal film semiconductor laser device laser of Input coupling mirror plating is anti-reflection and OPO pump light high-reflecting films；Swash
Light concave mirror plates OPO pump light high-reflecting films；Dichroic mirror plating OPO pump lights are anti-reflection, flashlight high-reflecting film；First surface mirror and second
Curved mirror plates OPO pump lights and flashlight anti-, ideler frequency light anti-reflection film high；OPO flashlights output coupling mirror plating OPO flashlights part
Reflectance coating；OPO pump lights high reflective mirror plates OPO pump light high-reflecting films；Nonlinear crystal plating OPO pumpings, signal and ideler frequency light are anti-reflection
Film；The plating of laser gain the crystal single output of transverse mode semiconductor laser laser and OPO pump light anti-reflection films；Wherein, high-reflecting film refers to
Film of the power reflectance more than 99%, anti-reflection film refers to film of the power transmittance more than 97%, and part reflectance coating refers to reflectivity
Film less than 15%.
Further, laser gain crystal is realized right by way of using cut at Brewster angle or plating anti-reflection film
The good transmitance of laser pump (ing) wavelength and laser radiation wavelength；By selecting appropriate rear-earth-doped concentration and crystal thickness,
It is easy to implement the Yb:KYW (or Yb:KGW) abundant suction of the laser gain crystal to single transverse mode diode-end-pumped light
Receive, heat diffusion is conducive to again.Such as, rear-earth-doped concentration is 10%；Crystal thickness is 1 millimeter.
Compared with prior art, the present invention has following beneficial effect：
(1) optical parametric oscillator of existing intracavity pump typically mixes Nd gain mediums using four-level.This hair
Bright use three-level mixes Yb gain mediums, and laser produces the quantum defect of process smaller, thus can obtain higher
Power conversion efficiency, while laser produces process to be produced with less heat.
(2) optical parametric oscillator of existing intracavity pump typically uses many transverse mode semiconductor lasers as pumping source.
The present invention uses single transverse mode semiconductor laser as pumping source, efficiently can obtain particle in three-level laser gain media
Number reversion；Using single-transverse mode laser as pumping source another advantage is that single-transverse mode laser is general than many transverse mode semiconductors
The intensity noise of laser is lower, is conducive to improving the stability of optical parametric oscillator power output.
(3) knot of the general laser resonant cavity of the optical parametric oscillator of existing intracavity pump and OPO signal optical cavities
Structure is fairly simple, is not formed in gain medium (or crystal) and nonlinear crystal and focused on well.The present invention is used
Condenser lens and Input coupling mirror cause that external semiconductor laser device laser is focused in laser gain crystal, use input coupling
Mirror and laser concave mirror cause OPO flashlights in gain medium (or crystal) inner focusing；Use the first concave mirror and second
Concave mirror causes that OPO pump lights and OPO flashlights are focused in nonlinear crystal.The threshold of laser and OPO can thus be reduced
Value, while respective threshold value can respectively be adjusted so that OPO reaches maximum conversion efficiency.
(4) typically using pumping configuration outside chamber, the present invention uses the optical parameter of intracavity pump to existing optical parametric oscillator
Oscillator.Nonlinear crystal is placed in the resonator of pump laser, the high power using the resonance intracavity pump laser is close
Degree, it is possible to achieve the threshold value vibration lower compared to pumping OPO outside chamber.
Brief description of the drawings
Fig. 1 is that the intracavity pump single resonance of single transverse mode semiconductor laser pump-coupling provided in an embodiment of the present invention is continuous
The structural representation of glistening light of waves parametric oscillator.
Wherein, 1 for single transverse mode semiconductor laser, 2 be condenser lens, 3 be Input coupling mirror, 4 be Yb:KYW (or Yb:
KGW) laser gain crystal, 5 be laser concave mirror, 6 be dichroic mirror, 7 be the first concave mirror, 8 be nonlinear crystal, 9 be second
Concave mirror, 10 are OPO flashlight output coupling mirrors, and 11 is OPO pump light high reflective mirrors.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used for explaining the present invention, not
For limiting the present invention.As long as additionally, technical characteristic involved in invention described below each implementation method that
Conflict is not constituted between this can be just mutually combined.
The invention provides a kind of intracavity pump single resonance continuous wave beche-de-mer without spike of single transverse mode semiconductor laser pump-coupling
Amount oscillator, the intracavity pump single-resonant optical parametric oscillator includes：Single transverse mode semiconductor laser, condenser lens, input
Coupling mirror, Yb:KYW (potassium yttrium tungstate doped ytterbium crystal) (or Yb:KGW, i.e. potassium yttrium tungstate doped ytterbium crystal) laser gain crystal, laser
Concave mirror, dichroic mirror, the first concave mirror, nonlinear crystal, secondary signal concave mirror, OPO flashlights output coupling mirror and OPO pumps
Pu light high reflective mirror.
Wherein, the single transverse mode semiconductor laser of Input coupling mirror plating is anti-reflection and laser (i.e. OPO pump lights) high-reflecting film；It is described to swash
Light concave mirror plates laser (i.e. OPO pump lights) high-reflecting film；The dichroic mirror plating OPO pump lights are anti-reflection and OPO flashlight high-reflecting films；
The first surface mirror and the second curved mirror plating OPO pump lights and flashlight anti-, ideler frequency light anti-reflection film high；The OPO flashlights
Output coupling mirror plating OPO flashlights part reflectance coating；The OPO pump lights high reflective mirror plates OPO pump light high-reflecting films；The non-thread
Property crystal plating OPO pumpings, signal and ideler frequency light anti-reflection film；The Yb:KYW (or Yb:KGW) the single transverse mode half of laser gain crystal plating
Conductor laser exports laser and OPO pump light anti-reflection films.
Single transverse mode semiconductor laser is focused on as the pumping source of laser after line focus lens and the Input coupling mirror
In the Yb:KYW (or Yb:KGW) laser gain crystal；OPO pump lights are by the OPO pump lights high reflective mirror, the input
Coupling mirror, the Yb:KYW (or Yb:KGW) laser gain crystal, the laser concave mirror, the dichroic mirror, described first recessed
Laser generation is formed in the laser resonant cavity that face mirror, the nonlinear crystal and second concave mirror are constituted；
Nonlinear crystal is placed in laser resonant cavity, and the laser vibrated in chamber can be produced by the nonlinear crystal
The gain of OPO flashlights and ideler frequency light；OPO flashlights are by the OPO flashlights output coupling mirror, dichroic mirror, described
Vibration is formed in the OPO signals optical cavity that first concave mirror, the nonlinear crystal and second concave mirror are constituted, is produced
OPO flashlights exported by the OPO flashlights output coupling mirror, the OPO ideler frequency lights of generation are by first concave mirror
Exported with second concave mirror；Using the purpose of first concave mirror and second concave mirror be realize OPO signals and
Focusing of the pump light in the nonlinear crystal, to reduce the oscillation threshold of OPO.
Single transverse mode semiconductor laser is specially：Centre wavelength is 981 nanometers of single transverse mode semiconductor laser, to match
The Yb:KYW (or Yb:KGW) the peak absorbtivity wavelength of laser gain crystal；
Yb:KYW (or Yb:KGW) laser gain crystal is by the method reality using cut at Brewster angle or plating anti-reflection film
Now to laser pump (ing) wavelength and the good transmitance of laser radiation wavelength；By selecting appropriate rear-earth-doped concentration and crystal thickness
Degree, realizes the Yb:KYW (or Yb:KGW) abundant suction of the laser gain crystal to single transverse mode diode-end-pumped light
Receive.
Condenser lens is used to realize the focusing to single transverse mode laser semiconductor, to realize and laser resonance cavity space
Pattern is in the Yb:KYW (or Yb:KGW) the matching in laser gain crystal.
Nonlinear crystal can be period polarized lithium columbate crystal, potassium titanyl oxygenic phosphate(KTP) crystal or other can produce it is non-linear
The crystal of gain.
For the continuous glistening light of waves of the intracavity pump for illustrating further diode-end-pumped provided in an embodiment of the present invention
Parametric oscillator, with reference to example and accompanying drawing 1, the present invention is described further.
The optical parametric oscillator of existing intracavity pump typically mixes Nd gain mediums using four-level.The present invention is adopted
Yb gain mediums are mixed with three-level, the wavelength interval of its pump light and radiant light is situated between compared with the Nd laser gains of mixing of four-level
Matter is small, and its radiation spectrum is wider.Laser produces the quantum defect of process smaller, thus can obtain power conversion effect higher
Rate；The heat produced during laser is produced simultaneously is less；Broader radiation spectrum can support broader OPO pump wavelengths
Tuning range.The optical parametric oscillator of existing intracavity pump is typically using multimode semiconductor laser as pumping source.This hair
It is bright to use single transverse mode high brightness semiconductor laser as pumping source, efficiently can obtain grain in three-level laser gain media
Subnumber is inverted；Using single-transverse mode laser as pumping source another advantage is that the laser that can obtain occupational noise is defeated
Go out.
The intracavity pump single resonance continuous wave optical parametric oscillator includes：Single transverse mode semiconductor laser 1, condenser lens 2,
Input coupling mirror 3, Yb:KYW (or Yb:KGW) laser gain crystal 4, laser concave mirror 5, dichroic mirror 6, the first concave mirror 7, non-
Linear crystal 8, the second concave mirror 9, OPO flashlights output coupling mirror 10 and OPO pump lights high reflective mirror 11.Single transverse mode semiconductor swashs
The output laser of light device 1 focuses on Yb after sequentially passing through condenser lens 2 and Input coupling mirror 3 along light path:KYW (or Yb:KGW) swash
Gain of light crystal 4；Laser concave mirror 5 requires Yb along followed by the light path:KYW (or Yb:KGW) laser gain crystal 4
The laser (i.e. OPO pump lights) of generation focuses on the laser gain crystal in the presence of Input coupling mirror 3 and laser concave mirror 5
4；Yb:KYW (or Yb:KGW) one direction of OPO pump lights that laser gain crystal 4 is produced is through the foveal reflex of Input coupling mirror 3
The center of OPO pump lights high reflective mirror 11 is reached afterwards and causes the light backtracking；Other direction is by the center of laser concave mirror 5
Perpendicular through dichroic mirror 6 after reflection, then by, perpendicular through nonlinear crystal 8, finally being reached after the foveal reflex of the first concave mirror 7
The center of second concave mirror 9 simultaneously causes the light backtracking, and require the OPO flashlights and OPO that are produced in nonlinear crystal 8
Pump light focuses on nonlinear crystal 8 in the presence of the first concave mirror 7 and the second concave mirror 9；The OPO flashlights of generation are through
One concave mirror 7 reflexes to dichroic mirror 6, then reaches the center of OPO flashlights output coupling mirror 10 simultaneously by vertical after the reflection of dichroic mirror 6
So that the light backtracking.
Wherein, Input coupling mirror 3 plates that single horizontal laser of film semiconductor laser 1 is anti-reflection and laser (i.e. OPO pump lights) is high anti-
Film；Laser concave mirror 5 plates laser (i.e. OPO pump lights) high-reflecting film；The plating OPO pump lights of dichroic mirror 6 are anti-reflection, flashlight high-reflecting film；
7 and second curved mirror of first surface mirror 9 plates OPO pump lights and flashlight anti-, ideler frequency light anti-reflection film high；OPO signal light output couplings
Close the plating OPO flashlights of mirror 10 part reflectance coating；OPO pump lights high reflective mirror 11 plates OPO pump light high-reflecting films；Nonlinear crystal 7 is plated
OPO pumpings, signal and ideler frequency light anti-reflection film；Yb:KYW (or Yb:KGW) laser gain crystal 4 plates single transverse mode semiconductor laser 1
Output laser and OPO pump light anti-reflection films.Wherein high-reflecting film requirement power reflectance is more than 99%, and anti-reflection film power transmittance is big
In 97%, part reflectance coating reflectivity is less than 15%.
Single transverse mode semiconductor laser 1 is focused on as the pumping source of laser after line focus lens 2 and Input coupling mirror 3
In Yb:KYW (or Yb:KGW) laser gain crystal 4；OPO pump lights by OPO pump lights high reflective mirror 11, Input coupling mirror 3,
Yb:KYW (or Yb:KGW) laser gain crystal 4, laser concave mirror 5, dichroic mirror 6, the first concave mirror 7, nonlinear crystal 8 and
Laser generation is formed in the laser resonant cavity that two concave mirrors 9 are constituted.
The laser vibrated in chamber can produce the increasing of OPO flashlights and ideler frequency light by the nonlinear crystal 8 in resonator
Benefit；OPO flashlights are recessed by OPO flashlights output coupling mirror 10, dichroic mirror 6, the first concave mirror 7, nonlinear crystal 8 and second
Vibration is formed in the resonator that face mirror 9 is constituted, the OPO flashlights of generation are exported by OPO flashlights output coupling mirror 10, produced
OPO ideler frequency lights exported by the first concave mirror 7 and the second concave mirror 9；Using the first concave mirror 7 and the mesh of the second concave mirror 9
Be the focusing for realizing OPO signals and pump light in nonlinear crystal 8 so that OPO flashlights and pump light are in non-linear crystalline substance
Hot spot in body 8 reduces, equivalent to light intensity increase, to reduce the oscillation threshold of OPO.
In embodiments of the present invention, the lithium columbate crystal (Periodically that nonlinear crystal 8 can be polarized with selection cycle
Poled Lithium Niobate, PPLN), when the wavelength of the pump light (i.e. laser) of OPO is 1040 nanometers, the polarization of PPLN
When cycle is 30.2 microns, the wavelength of flashlight and ideler frequency light is respectively 1517 nanometers and 3305 nanometers.Locking OPO flashlights
Wavelength, by tuning the pump wavelength of OPO and the polarization cycle of synchronous change PPLN or temperature, it is possible to achieve exported to OPO
The tuning of ideler frequency optical wavelength；The pump wavelength of OPO is locked, by the wavelength and synchronous change PPLN that change OPO flashlights
Polarization cycle or temperature, it is also possible to realize exporting OPO the tuning of ideler frequency optical wavelength.
In embodiments of the present invention, wavelength is 981 nanometers of single transverse mode semiconductor centered on single transverse mode semiconductor laser 1
Laser, to match Yb:KYW (or Yb:KGW) the peak absorbtivity wavelength of laser gain crystal 4.
In embodiments of the present invention, Yb:KYW (or Yb:KGW) laser gain crystal 4 is by using cut at Brewster angle
Or the method for plating anti-reflection film is realized to laser pump (ing) wavelength (i.e. single output wavelength of transverse mode semiconductor laser 1) and laser emission ripple
Good transmitance long；The appropriate rear-earth-doped concentration of selection and crystal thickness, to realize Yb:KYW (or Yb:KGW) laser increases
Beneficial crystal 4 exports laser and fully absorbs to single transverse mode semiconductor laser 1.
In embodiments of the present invention, condenser lens 2 is used to realize gathering single transverse mode semiconductor laser 1 output laser
It is burnt so that spot size of the laser with pump light in laser gain crystal 4 is close, transverse mode spatially overlaps；
To realize with laserresonator spatial model in Yb:KYW (or Yb:KGW) the matching in laser gain crystal 4.
In embodiments of the present invention, nonlinear crystal 8 can be period polarized lithium columbate crystal (PPLN), phosphoric acid titanyl
Potassium crystal (KTP) or other can produce the crystal of non-linear gain.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. the intracavity pump continuous wave optical parametric oscillator of a kind of diode-end-pumped, it is characterised in that including：Single transverse mode
It is semiconductor laser (1), condenser lens (2), Input coupling mirror (3), laser gain crystal (4), laser concave mirror (5), double-colored
Mirror (6), the first concave mirror (7), nonlinear crystal (8), the second concave mirror (9), OPO flashlights output coupling mirror (10) and OPO
Pump light high reflective mirror (11)；
The laser of single transverse mode semiconductor laser (1) output sequentially passes through the condenser lens (2) and described along light path
The laser gain crystal (4) is focused on after Input coupling mirror (3)；In the OPO pump lights that the laser gain crystal (4) produces
One direction reaches OPO pump lights high reflective mirror (11) center after the Input coupling mirror (3) foveal reflex and causes to be somebody's turn to do
Light backtracking；In the OPO pump lights other direction by after laser concave mirror (5) foveal reflex perpendicular through institute
Dichroic mirror (6) is stated, then is reached afterwards perpendicular through the nonlinear crystal (8) by after the first concave mirror (7) foveal reflex
Second concave mirror (9) center simultaneously causes the light backtracking；The OPO flashlights produced by the nonlinear crystal (8)
In a direction reflex to the dichroic mirror (6) through first concave mirror (7), then hung down by after the dichroic mirror (6) reflection
Until up to OPO flashlights output coupling mirror (10) center and cause the light backtracking；Other direction in OPO flashlights
Reach the second concave mirror (9) center and cause the light backtracking.
2. intracavity pump continuous wave optical parametric oscillator as claimed in claim 1, it is characterised in that the laser gain crystal
(4) the OPO pump lights for producing focus on described sharp in the presence of the Input coupling mirror (3) and the laser concave mirror (5)
Gain of light crystal (4)；
The OPO flashlights that produce in the nonlinear crystal (8) and OPO pump lights are in first concave mirror (7) and described
Nonlinear crystal (8) is focused in the presence of second concave mirror (9).
3. intracavity pump continuous wave optical parametric oscillator as claimed in claim 1 or 2, it is characterised in that the laser gain
Crystal (4) is Yb:KYW or Yb:KGW.
4. intracavity pump continuous wave optical parametric oscillator as claimed in claim 1 or 2, it is characterised in that the input coupling
The single horizontal film semiconductor laser device laser of mirror (3) plating is anti-reflection and OPO pump light high-reflecting films；The laser concave mirror (5) plates OPO pumpings
Light high-reflecting film；Dichroic mirror (6) the plating OPO pump lights are anti-reflection, flashlight high-reflecting film；The first surface mirror (7) and described
Two curved mirrors (9) plate OPO pump lights and flashlight anti-, ideler frequency light anti-reflection film high；OPO flashlights output coupling mirror (10) plating
OPO flashlights part reflectance coating；The OPO pump lights high reflective mirror (11) plates OPO pump light high-reflecting films；The nonlinear crystal
(7) plating OPO pumpings, signal and ideler frequency light anti-reflection film；The single transverse mode semiconductor laser output of laser gain crystal (4) plating swashs
Light and OPO pump light anti-reflection films；
Wherein, high-reflecting film refers to film of the power reflectance more than 99%, and anti-reflection film refers to film of the power transmittance more than 97%, portion
Reflectance coating is divided to refer to film of the reflectivity less than 15%.
5. the intracavity pump continuous wave optical parametric oscillator as described in claim any one of 1-4, it is characterised in that the Dan Heng
Wavelength is 981 nanometers of single transverse mode semiconductor laser centered on mould semiconductor laser (1), for matching the laser gain
The peak absorbtivity wavelength of crystal (4).
6. the intracavity pump continuous wave optical parametric oscillator as described in claim any one of 1-4, it is characterised in that the laser
Gain crystal is realized to laser pump (ing) wavelength and laser emission ripple by way of using cut at Brewster angle or plating anti-reflection film
Transmitance long.
7. the intracavity pump continuous wave optical parametric oscillator as described in claim any one of 1-4, it is characterised in that the focusing
Lens (2) are for realizing the focusing to single transverse mode laser semiconductor, and realize existing with laserresonator spatial model
Matching in the laser gain crystal.
8. the intracavity pump continuous wave optical parametric oscillator as described in claim any one of 1-4, it is characterised in that the non-thread
Property crystal (8) be period polarized lithium columbate crystal, potassium titanyl oxygenic phosphate(KTP) crystal or other can produce the crystal of non-linear gain.
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| CN110571638A (en) * | 2019-08-16 | 2019-12-13 | 华中科技大学 | Broadband double-oscillation parametric oscillator for reflecting injected pump light |
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| CN112864785A (en) * | 2021-01-26 | 2021-05-28 | 西安电子科技大学 | Femtosecond laser generating system with high power GHz repetition frequency |
| CN113572010A (en) * | 2020-04-29 | 2021-10-29 | 上海禾赛科技有限公司 | Laser, lidar comprising same and method for generating laser light |
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| CN109742646A (en) * | 2019-01-03 | 2019-05-10 | 华中科技大学 | A kind of device inhibiting the optical parametric oscillator relaxation oscillation of intracavity pump continuous wave |
| TWI700870B (en) * | 2019-06-24 | 2020-08-01 | 泓陽科技股份有限公司 | Apparatus and method of high power nanosecond mode-locked solid state laser |
| CN110571638A (en) * | 2019-08-16 | 2019-12-13 | 华中科技大学 | Broadband double-oscillation parametric oscillator for reflecting injected pump light |
| CN113572010A (en) * | 2020-04-29 | 2021-10-29 | 上海禾赛科技有限公司 | Laser, lidar comprising same and method for generating laser light |
| CN113572010B (en) * | 2020-04-29 | 2022-09-23 | 上海禾赛科技有限公司 | Laser, lidar comprising same and method for generating laser light |
| CN112864785A (en) * | 2021-01-26 | 2021-05-28 | 西安电子科技大学 | Femtosecond laser generating system with high power GHz repetition frequency |
| CN114578628A (en) * | 2022-02-18 | 2022-06-03 | 山西大学 | Down-conversion optical resonant cavity for generating narrow linewidth photon pair |
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