CN201247902Y - Sum-frequency laser - Google Patents
Sum-frequency laser Download PDFInfo
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- CN201247902Y CN201247902Y CNU2008201031524U CN200820103152U CN201247902Y CN 201247902 Y CN201247902 Y CN 201247902Y CN U2008201031524 U CNU2008201031524 U CN U2008201031524U CN 200820103152 U CN200820103152 U CN 200820103152U CN 201247902 Y CN201247902 Y CN 201247902Y
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- chamber mirror
- cavity
- gain medium
- frequency
- frequency laser
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Abstract
The utility model relates to the field of lasers, in particular to a sum-frequency laser with a composite resonant cavity formed by simple optical elements. The sum-frequency laser comprises a pump light source, an optical coupling system, laser gain mediums, a sum-frequency crystal and resonant cavities. More importantly, the resonant cavities are straight-cavity composite cavities formed by a first cavity lens, a second cavity lens and a third cavity lens which are sequentially arranged; the first cavity lens and the third cavity lens form the first resonant cavity, and the second cavity lens and the third cavity lens form the second resonant cavity; the first laser gain medium is arranged between the first cavity lens and the second cavity lens, and the second laser gain medium is arranged between the second cavity lens and the third cavity lens; the sum-frequency crystal is arranged between the second cavity lens and the third cavity lens; and the pump light source is the single-wavelength pump light of a pump source or two-wavelength pump light of two pump sources. The utility model has simple structure and stable performances and can realize low-cost mass production.
Description
Technical field
The utility model relates to field of lasers, relates in particular to a kind ofly to adopt that simple optical elements constitutes composite resonant cavity and frequency laser.
Background technology
Usually form two independent resonant cavitys by two independent gain mediums with frequency laser, make conllinear generation and output frequently in two different wave length laser crystals by the polarization light combination mirror simultaneously.As shown in Figure 1,101,102,103 is laser mirror, and 104,105 is gain medium, and 106 is the polarization light combination mirror, and 107 are and the frequency crystal, and its shortcoming optical texture complexity is regulated difficulty, and laser output also is difficult for stablizing, and the Practical significance product is seldom arranged.
See Fig. 2 with the another kind of common structure in frequency chamber, 201,202,203 is laser cavity, and 204 is gain medium, and 205 are and the frequency crystal.201,202 form the chamber produces wavelength X 1,202 and 203 formation chambeies generation λ 2.Fig. 2 structure is simpler than Fig. 1, but it adopts same gain medium, and common two wavelength are vied each other, and are difficult to effective control, also are difficult to commercialization.
Summary of the invention
For overcoming above-mentioned defective, the utility model provides a kind of simple in structure and a kind of and frequency laser that can manufacture.
The utility model adopts following technical scheme:
Of the present utility model and frequency laser comprises pump light source, optical coupling system, gain medium and crystal, resonant cavity frequently.Main, described resonant cavity is straight cavate Compound Cavity, and this Compound Cavity is that three chamber mirrors constitute, and the first chamber mirror, the second chamber mirror, the 3rd chamber mirror are arranged in order.The first chamber mirror and the 3rd chamber mirror constitute first resonant cavity, and the second chamber mirror and the 3rd chamber mirror constitute second resonant cavity.First gain medium is arranged at the first chamber mirror between the second chamber mirror, and second gain medium is arranged at the second chamber mirror between the 3rd chamber mirror.Described and frequency crystal is arranged between the second chamber mirror and the 3rd chamber mirror.
Further, the described second chamber mirror is the laser cavity film, and it is to the transmittance of first resonant cavity, to the light reflection of second resonant cavity.
Further, described first gain medium and second gain medium are that identical gain medium or described first gain medium and second gain medium are the different gains medium.
Further, can polarisation be set at the second chamber mirror between the 3rd chamber mirror and learn element.
Further, can between the second chamber mirror and the 3rd chamber mirror, an optics Q switching be set.
Further, described pump light source is the single wavelength pump light of a pumping source.Perhaps described pump light source is two wavelength pump lights of two pumping sources.
Further, above-mentioned pump light source can adopt end pumping, also can adopt profile pump.
Aforesaid optical element can be the discrete cavity configuration of independent distribution, can also will adopt optical cement between each optical element, and the in-depth optical cement is bonded to single whole microchip structure.
Because of adopting technique scheme, the utility model makes and the frequency laser stable performance simple for structure that becomes, thereby for realizing that with frequency laser extensive cheap batch process the in batches provides possibility.
Description of drawings
Fig. 1 is a kind of of background technology and frequency laser structural representation;
Fig. 2 is the another kind and the frequency laser structural representation of background technology;
Fig. 3 is the first execution mode structural representation of the present utility model;
Fig. 4 is the second execution mode structural representation of the present utility model;
Fig. 5 is the 3rd an execution mode structural representation of the present utility model;
Fig. 6 is that resonant cavity of the present utility model adopts TypeI class frequency-doubling crystal to add polarisation element schematic diagram;
Fig. 7 is that resonant cavity of the present utility model adopts TypeII class frequency-doubling crystal to add polarisation element schematic diagram;
Fig. 8 is the structural representation that the utility model adopts microchip.
Embodiment
Shown in Fig. 3,4,5, of the present utility model and frequency laser, comprise pump light source (307), optical coupling system (308), gain medium and frequency crystal (306), resonant cavity, it is characterized in that: described resonant cavity is straight cavate Compound Cavity, this Compound Cavity is that three chamber mirrors constitute, and the first chamber mirror (301), the second chamber mirror (305), the 3rd chamber mirror (302) are arranged in order; The first chamber mirror (301) constitutes first resonant cavity with the 3rd chamber mirror (302), and the second chamber mirror (305) constitutes second resonant cavity with the 3rd chamber mirror (302); First gain medium (303) is arranged at the first chamber mirror (301) between the second chamber mirror (305), and second gain medium (304) is arranged between the second chamber mirror (305) and the 3rd chamber mirror (302); Described and frequency crystal (306) is arranged between the second chamber mirror (305) and the 3rd chamber mirror (302).
Further, the described second chamber mirror is the laser cavity film, and it is to the transmittance of first resonant cavity, to the light reflection of second resonant cavity.Among Fig. 3, it is that λ 1, the second chamber mirror (305), second gain medium (304) are λ 2 with the 3rd chamber mirror (302) generation optical maser wavelength that the first chamber mirror (301), first gain medium (303) produce optical maser wavelength with the 3rd chamber mirror (302); The second chamber mirror (305) is high anti-to wavelength X 2, and to wavelength X 1 transmission, the first chamber mirror (301) is usually to wavelength X 1 transmission, and the 3rd chamber mirror (302) is high anti-to wavelength X 1, wavelength X 2.Wavelength X 1 and wavelength X 2 with frequency crystal (306) in conllinear generation and frequency laser.
Further, described pump light source is the single wavelength pump light of a pumping source.
As shown in Figure 3, the utility model first embodiment promptly adopts the single wavelength pump light.Pump light is absorbed by two gain mediums respectively, select suitable first gain medium (303) doping content and length, can distribute pump light to arrive suitable light intensity with adjusting wavelength X 1 and wavelength X 2 at first gain medium (303) and second gain medium (304) assimilation ratio.
Further, described first gain medium and second gain medium are that identical gain medium or described first gain medium and second gain medium are the different gains medium.
Because the utility model adopts two gain mediums to constitute the chamber, the first chamber mirror (301), first gain medium (303), the second chamber mirror (305) or different gains medium have identical wavelength X 1 emission.Constitute and avoided wavelength X 1 and wavelength X 2 competitions in the chamber, as first gain medium (303) and second gain medium (304) is the same laser gain media, if wavelength X 2 easily realizes than steady operation than the much bigger then laser cavity of wavelength X 1 gain, simultaneously owing to adopt straight cavity configuration to make laser cavity be easy to regulate, if first gain medium (303) and second gain medium (304) are the different gains medium for the same laser gain media, emission wavelength is not overlapping again, and then laser cavity will be in steady-working state.
Perhaps described pump light source is two wavelength pump lights of two pumping sources.As shown in Figure 4, second execution mode of the present utility model adopts two wavelength light end pumpings exactly.Pump light source is two Different L D pump light sources, and 307A, 307B at same end pumping, converge to same input light path by optical element with two pump light sources as pumping source, and 308A, 308B, 308C are the collimation converging optical lens.
The 3rd execution mode of the present utility model adopts two pumping sources at two end pumpings as shown in Figure 5.Pump light source 307A and pump light source 307B are from composite resonant cavity two end pumpings.
The utility model removes and adopts end pumping, also can adopt profile pump, as xenon flash lamp pumping.
Further, can polarisation be set at the second chamber mirror between the 3rd chamber mirror and learn element.Conversion efficiency is higher because two polarised lights are in crystal and frequently, and we can realize required polarization or add the polarizer in the uniform gain medium by two optical axis direction emission cross sections by selecting the birefringece crystal optical axis direction.
As shown in Figure 6,309 is the polarizer, and 306 is TypeI class frequency-doubling crystal.
As shown in Figure 7,309 is the polarizer, and 310 for being 1/2 λ 1 (or full-wave plate) to λ 1, and λ 2 is the dual wavelength wave plate of full-wave plate (or 1/2 wave plate), and 306 is TypeII class frequency-doubling crystal.
Added polarisation at optical resonator and learned element, repeated no more in this formerly disclosing in the patent application literary composition.
Further, can be used to make the laser of dual wavelength or the above output of two wavelength, also can between the second chamber mirror and the 3rd chamber mirror, an optics Q switching be set, be made into the pulse output laser.
Aforesaid optical element can be the discrete cavity configuration of independent distribution, can also will adopt optical cement between each optical element, and the in-depth optical cement is bonded to single whole microchip structure.
As shown in Figure 8, be exactly to be embodiment of the utility model microchip structure.401 is semiconductor laser, 402 is coupling optical system, 403 is that Nd:YVO4 produces the 914nm wave plate at S1 and S3 face, 404 is another sheet Nd:YVO4, S2 and S3 face produce 1.064 μ m laser, 405 are and frequency crystal KTP, S1 is in the face of 1.064 μ m transmissions, so easily produce 914nm between S1 and the S3, differ very big by the 914nm gain with 1.064 simultaneously, it is to S2, and 1.064 between the S3 can't compete, so minimum to 404 generations, 1.064 μ m influence between S2, the S3, thereby whole microplate can constitute 491nm laser stable and that export frequently.
Claims (10)
1, a kind of and frequency laser, comprise pump light source (307), optical coupling system (308), gain medium and frequency crystal (306), resonant cavity, it is characterized in that: described resonant cavity is straight cavate Compound Cavity, this Compound Cavity is that three chamber mirrors constitute, and the first chamber mirror (301), the second chamber mirror (305), the 3rd chamber mirror (302) are arranged in order; The first chamber mirror (301) constitutes first resonant cavity with the 3rd chamber mirror (302), and the second chamber mirror (305) constitutes second resonant cavity with the 3rd chamber mirror (302); First gain medium (303) is arranged at the first chamber mirror (301) between the second chamber mirror (305), and second gain medium (304) is arranged between the second chamber mirror (305) and the 3rd chamber mirror (302); Described and frequency crystal (306) is arranged between the second chamber mirror (305) and the 3rd chamber mirror (302).
2, as claimed in claim 1 and frequency laser is characterized in that: the described second chamber mirror (305) is the laser cavity film, and it is to the transmittance of first resonant cavity, to the light reflection of second resonant cavity.
3, as claimed in claim 1 and frequency laser is characterized in that: described first gain medium (303) and second gain medium (304) are the identical gain medium.
4, as claimed in claim 1 and frequency laser is characterized in that: described first gain medium (303) and second gain medium (304) are the different gains medium.
5, as claimed in claim 1 and frequency laser is characterized in that: can polarisation be set at the second chamber mirror (305) between the 3rd chamber mirror (302) and learn element (309).
6, as claimed in claim 1 and frequency laser is characterized in that: can between the second chamber mirror (305) and the 3rd chamber mirror (302) an optics Q switching be set.
7, as claimed in claim 1 and frequency laser is characterized in that: described pump light source (307) is the single wavelength pump light of a pumping source.
8, as claimed in claim 1 and frequency laser is characterized in that: described pump light source (307) is two wavelength pump lights of two pumping sources.
9, as the described and frequency laser of above-mentioned arbitrary claim, it is characterized in that: each optical element in the described and frequency laser can be the discrete cavity configuration of independent distribution, can also will adopt optical cement between each optical element, the in-depth optical cement is bonded to single whole microchip structure.
10, as claim 7 or 8 described and frequency lasers, it is characterized in that: described pump light source (307) can adopt end pumping, also can adopt profile pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201031524U CN201247902Y (en) | 2008-07-22 | 2008-07-22 | Sum-frequency laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201031524U CN201247902Y (en) | 2008-07-22 | 2008-07-22 | Sum-frequency laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201247902Y true CN201247902Y (en) | 2009-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201031524U Expired - Fee Related CN201247902Y (en) | 2008-07-22 | 2008-07-22 | Sum-frequency laser |
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| Country | Link |
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| CN (1) | CN201247902Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932529A (en) * | 2016-05-20 | 2016-09-07 | 苏州领创激光科技有限公司 | Laser device with adaptively adjusted laser power |
| CN106877127A (en) * | 2017-04-17 | 2017-06-20 | 华北电力大学（保定） | A kind of medium cascades solid state laser |
| CN108011289A (en) * | 2018-01-05 | 2018-05-08 | 青岛镭创光电技术有限公司 | Laser and laser system |
-
2008
- 2008-07-22 CN CNU2008201031524U patent/CN201247902Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932529A (en) * | 2016-05-20 | 2016-09-07 | 苏州领创激光科技有限公司 | Laser device with adaptively adjusted laser power |
| CN106877127A (en) * | 2017-04-17 | 2017-06-20 | 华北电力大学（保定） | A kind of medium cascades solid state laser |
| CN108011289A (en) * | 2018-01-05 | 2018-05-08 | 青岛镭创光电技术有限公司 | Laser and laser system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20130722 |