CN204290030U - A kind of two waveband multi-wavelength infrared light parametric oscillator - Google Patents
A kind of two waveband multi-wavelength infrared light parametric oscillator Download PDFInfo
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- CN204290030U CN204290030U CN201420711907.4U CN201420711907U CN204290030U CN 204290030 U CN204290030 U CN 204290030U CN 201420711907 U CN201420711907 U CN 201420711907U CN 204290030 U CN204290030 U CN 204290030U
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Abstract
The utility model provides a kind of technical scheme of two waveband multi-wavelength infrared light parametric oscillator, the program includes pumping source resonant cavity, coupling shielding system and OPO resonant cavity, and the laser beam that pumping source resonant cavity sends penetrates through after coupling shielding system and OPO resonant cavity successively.The program adopts dual wavelength even three-wavelength pumping source pumping OPO system, two can be made to meet phase-matching condition to even three pairs of parameter luminous energy simultaneously, thus realize the output of two waveband multiwavelength laser, solve the problem that single OPO system cannot export multiple wavelength simultaneously.
Description
Technical field
The utility model relates to laser technology application, especially a kind of two waveband multi-wavelength infrared light parametric oscillator.
Background technology
In the prior art, known technology is that 1-3 μm and 3-5 mu m waveband laser have important using value at numerous areas such as electrooptical countermeasures, atmosphere environment supervision, medical treatment and spectrum selective materials.Mid infrared laser (OPO) based on frequency translation is one of effective way producing 1-5 mu m waveband infrared laser.
Based on the general principle of non-linear process, optical parameter process need meets phase-matching condition, and phase matched mode general at present has angle automatching, Temperature Matching and cycle match etc.No matter utilize which kind of phase matched mode, when adopting single wavelength pumping, only having the parameter luminous energy of certain a pair wavelength to meet phase-matching condition simultaneously, thus realizing the energy trasfer of pump light to parameteric light.If pumping wavelength changes a bit a little, so original a pair parameteric light that can meet phase-matching condition no longer will meet phase-matching condition, the substitute is another to new parameteric light.
Utility model content
The purpose of this utility model, be exactly for the deficiency existing for prior art, and a kind of technical scheme of two waveband multi-wavelength infrared light parametric oscillator is provided, the program adopts dual wavelength even three-wavelength pumping source pumping OPO system, two can be made to meet phase-matching condition to even three pairs of parameter luminous energy simultaneously, thus realize the output of two waveband multiwavelength laser, solve the problem that single OPO system cannot export multiple wavelength simultaneously.
This programme is achieved by the following technical measures: a kind of two waveband multi-wavelength infrared light parametric oscillator, include pumping source resonant cavity, coupling shielding system and OPO resonant cavity, the laser beam that pumping source resonant cavity sends penetrates through after coupling shielding system and OPO resonant cavity successively.
Preferred as this programme: include total reflective mirror, pumping laser gain module, Q switching and outgoing mirror in pumping source resonant cavity; The laser beam that pumping laser gain module is launched injects shielding system through after Q switching and outgoing mirror successively; Total reflective mirror is arranged on the side of pumping laser gain module away from beam-outlet end.
Preferred as this programme: coupling shielding system includes coupled lens group and isolator.
Preferred as this programme: OPO resonant cavity includes OPO total reflective mirror, OPO outgoing mirror and nonlinear crystal, the laser beam injecting OPO resonant cavity penetrates OPO resonant cavity through after OPO total reflective mirror, nonlinear crystal and OPO outgoing mirror successively.
Preferred as this programme: pumping laser gain module can output dual wavelength or multi-Wavelength Pulses laser.
The beneficial effect of this programme can be learnt according to describing of such scheme, the close pumping laser gain module of two or more wavelength can be exported because pumping laser gain module is in this scenario chosen as simultaneously, by to pumping laser gain module, total reflective mirror and outgoing mirror Film Design, laser can be made to export multiwavelength laser simultaneously, consider the phase-matching condition of multipair parameteric light simultaneously, by the parameter of appropriate design nonlinear crystal, two waveband multi-wavelength parameteric light can be realized and export.
As can be seen here, the utility model compared with prior art, has outstanding substantive distinguishing features and progress significantly, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1 is total reflective mirror, and 2 is pumping laser gain module, and 3 is outgoing mirror, and 4 is coupled lens group, 5 is isolator, and 6 is OPO resonant cavity, and 7 is nonlinear crystal, and 8 is OPO outgoing mirror, 9 is OPO total reflective mirror, and 10 is coupling shielding system, and 11 is Q switching, and 12 is pumping source resonant cavity.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Can be found out by accompanying drawing, this programme includes pumping source resonant cavity 12, coupling shielding system 10 and OPO resonant cavity 6; Pumping source resonant cavity 12 is made up of total reflective mirror 1, pumping laser gain module 2, Q switching 11 and outgoing mirror 3; Coupling shielding system 10 is made up of coupled lens group 4 and isolator 5; OPO resonant cavity 6 is made up of OPO total reflective mirror 9, OPO outgoing mirror 8 and nonlinear crystal 7.
Embodiment one:
Pumping laser gain module 2 adopts the Nd doping solid state laser of 808nm side pumping, and output wavelength is primarily of Nd ion
4f
3/2-
4i
11/2with
4f
3/2-
4i
13/2two energy level transition processes produce, and are generally 1 μm and 1.3 μm.Comprise following laser and output wavelength: Nd:YAG exports 1319nm and 1338nm simultaneously; Nd:YAG exports 1064nm and 1319nm simultaneously; Nd:YAG exports 1064nm, 1319nm and 1338nm simultaneously; Nd:YVO
4export 1064nm and 1342nm simultaneously; Nd:GdVO
4export 1064nm and 1342nm simultaneously; Nd:YAP exports 1079nm and 1341nm simultaneously; Nd:YLF exports 1047nm and 1053nm simultaneously; Nd:KGW exports 1067nm and 1351nm etc. simultaneously.Q switching adopts the acoustooptic Q-switching of 1 μm and 1.3 μm, can realize dual wavelength or the multi-Wavelength Pulses Laser output of 1 μm and 1.3 μm.Total reflective mirror 1 has high reflectance to 1 μm and 1.3 μm of laser, and outgoing mirror 3 is to 1 μm and 1.3 μm of equal fractional transmission, and concrete transmissivity should be determined by the gain size of gain medium to these two kinds of wavelength.Coupled lens group 4 all has high-transmission rate to 1 μm and 1.3 μm.Nonlinear crystal adopts PPLN crystal (the Periodically Poled Lithium Niobate of large clear aperture, periodically poled lithium niobate) or PPMgLN crystal (Periodically Poled MgO doped Lithium Niobate, periodically poled lithium niobate), plane of crystal plating to 1 μm and 1.3 μm, near-infrared and in the anti-reflection film of infrared three wave bands.OPO total reflective mirror 9 has high-transmission rate to 1 μm and 1.3 μm of laser, to flashlight and ideler frequency light, there is high reflectance, OPO outgoing mirror 8 has partial reflectance or high reflectance to 1 μm and 1.3 μm of laser, to flashlight and ideler frequency light wherein a kind of laser there is high-transmission rate, another kind of laser has part reflection, or all has part reflection to two kinds of laser.
By the polarization cycle of design PPLN crystal compounding periods such as () monocycle, mixing cycle, fan-shaped cycles and working temperature, can meet two to or the phase-matching condition of multipair parameteric light, realize the multi-wavelength tunable output simultaneously of 1.4-3 mu m waveband and 3-5 mu m waveband.
Embodiment two:
Composition graphs 1 illustrates present embodiment, and present embodiment and the difference described in execution mode one are, pumping laser gain module 2 is not adopt side pumping structure, and adopts end pumping structure.After being exported by coupling fiber by the LD of 808nm, mix the gain medium of Nd through total reflective mirror 1 pumping, total reflective mirror 1 has high reflectance to 1 μm and 1.3 μm of laser, has high-transmission rate to 808nm laser.
Embodiment three:
Composition graphs 1 illustrates present embodiment, present embodiment and the difference described in execution mode one are, nonlinear crystal 7 adopts PPLT crystal (Periodically Poled Lithium Tantalate, periodically poled lithium tantalate) or PPSLT crystal (Periodically Poled Stoichiometric Lithium Tantalate, period polarized stoichiometric lithium tantalate).By the polarization cycle of design PPLT or PPSLT crystal compounding periods such as () monocycle, mixing cycle, fan-shaped cycles and working temperature, can meet two to or the phase-matching condition of multipair parameteric light, the multi-wavelength realizing 1.4-3 mu m waveband and 3-5 mu m waveband simultaneously tunable laser exports.Coupled lens group 4, total reflective mirror 1, OPO outgoing mirror 8, OPO total reflective mirror 9 parameter also along with change, to meet the phase-matching condition of OPO.
Embodiment four:
Composition graphs 1 illustrates present embodiment, and present embodiment and the difference described in execution mode one are, nonlinear crystal 7 adopts the ktp crystal of two pieces of large clear apertures, and the walk-off effect carrying out birefringent phase matching compensates.By designing the parameter such as cutting angle of ktp crystal, can meet two to or the phase-matching condition of multipair parameteric light, the multi-wavelength realizing 1.4-3 mu m waveband and 3-5 mu m waveband simultaneously tunable laser exports.Coupled lens group 4, total reflective mirror 1, OPO outgoing mirror 8, OPO total reflective mirror 9 parameter also along with change, to meet the phase-matching condition of OPO.
Embodiment five:
Composition graphs 1 illustrates present embodiment, and present embodiment and the difference described in execution mode two are, pumping laser module adopts the Tm:YAP of 793nm end pumping, exports 1.94 μm and 1.98 μm of laser simultaneously.Q switching adopts the acoustooptic Q-switching of 2 μm, and total reflective mirror 1 has high reflectance to 1.94 μm and 1.98 μm, has high-transmission rate to 793nm, and outgoing mirror 3 has fractional transmission rate to 1.94 μm and 1.98 μm, has high reflectance to 793nm.The polarization cycle of nonlinear crystal 7 and surface coating make corresponding change, and coupled lens group 4, OPO total reflective mirror 9 and OPO outgoing mirror 8 are also along with change simultaneously, to meet phase-matching condition.
Embodiment six:
Composition graphs 1 illustrates present embodiment, present embodiment and the difference described in execution mode five are, nonlinear crystal 7 adopts PPLT crystal (Periodically Poled Lithium Tantalate, periodically poled lithium tantalate) or PPSLT crystal (Periodically Poled Stoichiometric Lithium Tantalate, period polarized stoichiometric lithium tantalate).By the polarization cycle of design PPLT or PPSLT crystal compounding periods such as () monocycle, mixing cycle, fan-shaped cycles and working temperature, can meet two to or the phase-matching condition of multipair parameteric light, the multi-wavelength realizing 2-3 mu m waveband and 3-5 mu m waveband simultaneously tunable laser exports.Total reflective mirror 1, outgoing mirror 3, coupled lens group 4, OPO outgoing mirror 8, OPO total reflective mirror 9 parameter also along with change, to meet the phase-matching condition of OPO.
Embodiment seven:
Composition graphs 1 illustrates present embodiment, and present embodiment and the difference described in execution mode five are, ZGP crystal (ZnGeP2, phosphorus germanium zinc) selected by nonlinear crystal.By parameters such as the cutting angles of design ZGP crystal, can meet simultaneously two to or the phase-matching condition of multipair parameteric light, the multi-wavelength realizing 2-3 mu m waveband and 3-5 mu m waveband exports simultaneously.Total reflective mirror 1, outgoing mirror 3, coupled lens group 4, OPO outgoing mirror 8, OPO total reflective mirror 9 parameter also along with change, to meet the phase-matching condition of OPO.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (5)
1. a two waveband multi-wavelength infrared light parametric oscillator, includes pumping source resonant cavity, coupling shielding system and OPO resonant cavity, it is characterized in that: the laser beam that described pumping source resonant cavity sends penetrates through after coupling shielding system and OPO resonant cavity successively.
2. a kind of two waveband multi-wavelength infrared light parametric oscillator according to claim 1, is characterized in that: include total reflective mirror, pumping laser gain module, Q switching and outgoing mirror in described pumping source resonant cavity; The laser beam that described pumping laser gain module is launched injects shielding system through after Q switching and outgoing mirror successively; Described total reflective mirror is arranged on the side of pumping laser gain module away from beam-outlet end.
3. a kind of two waveband multi-wavelength infrared light parametric oscillator according to claim 1, is characterized in that: described coupling shielding system includes coupled lens group and isolator.
4. a kind of two waveband multi-wavelength infrared light parametric oscillator according to claim 1, it is characterized in that: described OPO resonant cavity includes OPO total reflective mirror, OPO outgoing mirror and nonlinear crystal, the laser beam injecting OPO resonant cavity penetrates OPO resonant cavity through after OPO total reflective mirror, nonlinear crystal and OPO outgoing mirror successively.
5. a kind of two waveband multi-wavelength infrared light parametric oscillator according to claim 1, is characterized in that: described pumping laser gain module can output dual wavelength or multi-Wavelength Pulses laser.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362506A (en) * | 2014-11-25 | 2015-02-18 | 中国工程物理研究院应用电子学研究所 | Dual-waveband multi-wavelength infrared light parametric oscillator |
| CN108562551A (en) * | 2018-04-11 | 2018-09-21 | 黑龙江工程学院 | A kind of method that detector accurately measures concentration of SO 2 gas |
| CN108760653A (en) * | 2018-04-11 | 2018-11-06 | 黑龙江工程学院 | A kind of method that spectrometer accurately measures concentration of SO 2 gas |
| CN109856888A (en) * | 2019-02-25 | 2019-06-07 | 山西大学 | A kind of device and method enhancing the continuous variable compressed state optical field degree of compression |
| CN111224308A (en) * | 2018-11-23 | 2020-06-02 | 中国科学院理化技术研究所 | Intermediate infrared optical parameter all-solid-state laser source |
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2014
- 2014-11-25 CN CN201420711907.4U patent/CN204290030U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362506A (en) * | 2014-11-25 | 2015-02-18 | 中国工程物理研究院应用电子学研究所 | Dual-waveband multi-wavelength infrared light parametric oscillator |
| CN108562551A (en) * | 2018-04-11 | 2018-09-21 | 黑龙江工程学院 | A kind of method that detector accurately measures concentration of SO 2 gas |
| CN108760653A (en) * | 2018-04-11 | 2018-11-06 | 黑龙江工程学院 | A kind of method that spectrometer accurately measures concentration of SO 2 gas |
| CN108760653B (en) * | 2018-04-11 | 2020-11-17 | 黑龙江工程学院 | Method for accurately measuring concentration of sulfur dioxide gas by spectrometer |
| CN111224308A (en) * | 2018-11-23 | 2020-06-02 | 中国科学院理化技术研究所 | Intermediate infrared optical parameter all-solid-state laser source |
| CN109856888A (en) * | 2019-02-25 | 2019-06-07 | 山西大学 | A kind of device and method enhancing the continuous variable compressed state optical field degree of compression |
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Effective date of registration: 20170524 Address after: 100192, A207, building two, building B-2, Zhongguancun Dongsheng science and Technology Park, No. 66 Xiao Dong Road, Beijing, Haidian District Patentee after: Beijing Huayu Dexin Photoelectric Technology Co Ltd Address before: 621000 Mianyang, Sichuan, box 1013, box of 919 Patentee before: Applied Electronics Inst., Chinese Engineering Physics Inst. |
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