CN201860030U - Self-stimulated Raman sum frequency laser wavelength converting device with compact structure - Google Patents
Self-stimulated Raman sum frequency laser wavelength converting device with compact structure Download PDFInfo
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- CN201860030U CN201860030U CN2010206135781U CN201020613578U CN201860030U CN 201860030 U CN201860030 U CN 201860030U CN 2010206135781 U CN2010206135781 U CN 2010206135781U CN 201020613578 U CN201020613578 U CN 201020613578U CN 201860030 U CN201860030 U CN 201860030U
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Abstract
The utility model discloses a self-stimulated Raman sum frequency laser wavelength converting device with a compact structure, which comprises a public resonant cavity. The public resonant cavity comprises a shared resonant cavity mirror and a shared output coupling mirror, wherein self-stimulated Raman scattering medium and a nonlinear sum frequency crystal are sequentially arranged between the shared resonant cavity mirror and the shared output coupling mirror. The device can effectively increase the quantity of usable singlet laser wavelengths.
Description
Technical field
The utility model relates to a kind of optical maser wavelength converter device, is specifically related to a kind of excited Raman and frequency laser Wavelength converter of cramped construction.
Background technology
Usually the output optical maser wavelength of solid state laser comes from the energy level transition of laser material, but the solid laser material of practical application is not a lot, therefore every kind of laser transition spectral line that solid laser material also has only minority to use can not satisfy ever-increasing demand by practical singlet wavelength.
Research and development along with nonlinear optics frequency convener technology and corresponding nonlinear optical crystal, by the nonlinear optics frequency convener technology can be the wavelength Conversion that comes from the laser crystal energy level transition new optical maser wavelength, and these technology are called nonlinear optics frequency multiplication and technology such as frequency, difference frequency and optical parameter conversion.In nonlinear optics and frequency technology, the most frequently used is that participation and two different wavelength of laser frequently all are the energy level transitions that comes from laser material, produce the fundamental frequency light of 1064nm and two different wave lengths of 1318nm as two sub resonant cavities of United States Patent (USP) technology No.5.345.457 respectively by the energy level transition of two laser crystals, these two basic frequency beams are the wavelength output that has produced 589nm with the frequency crystal by the public intersection of resonant cavity again.Similarly application number is arranged is 200410010917.6 mandate utility model patent to domestic technique, and this patented technology has proposed a kind of chamber in and the refrative cavity structure of frequency.Also has U.S. Patent No. by the patented technology that obtains new wavelength with the frequency technology: US20040125834A1, quasi-three-level transition acquisition by solid laser material in the fundamental frequency light of participation and two different wave lengths frequently in this patented technology, another four-level transition by solid laser material obtains.
The another kind of method of laser frequency conversion is the stimulated Raman scattering technology, and this technology is the frequency displacement that the stimulated Raman scattering by the Raman scattering medium causes, incident and be converted to the laser of new wavelength by the fundamental frequency light of Raman scattering medium.The laser of this new wavelength can continue to be converted to by the frequency doubling technology of nonlinear optics the laser of another wavelength again again.Chinese patent application the frequency doubling technology of this raman laser, application number is respectively 200810138022.9 and 200720029555.4.
The utility model content
The purpose of this utility model is in conjunction with above background technology, has proposed a kind of excited Raman and frequency laser Wavelength converter of cramped construction, further widens available singlet optical maser wavelength quantity.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the utility model is achieved through the following technical solutions:
A kind of self-stimulated Raman of cramped construction and frequency laser Wavelength converter, comprise a public resonant cavity, described public resonant cavity comprises a shared resonator mirror and a shared output coupling mirror, is disposed with a self-stimulated Raman scattering medium and a non-linear and frequency crystal between described common resonant chamber mirror and the described shared output coupling mirror.
Preferably, the preparation of the related film of common resonant chamber mirror system is constituted new self-stimulated Raman scattering medium on the input surface of described self-stimulated Raman scattering medium, thereby cancel independent lens, wherein, the surface of described new self-stimulated Raman scattering medium can be a concave surface, also can be plane or convex surface.
The operation principle of the excited Raman of cramped construction of the present utility model and frequency laser Wavelength converter is as follows:
When pump light pumping that the self-stimulated Raman scattering medium in the common resonant chamber is sent by external light source, having produced transition wavelength on the different energy level of this self-stimulated Raman scattering medium respectively is λ
0The laser and second wavelength be λ
2The laser levels TRANSITION LASER.Wherein, described wavelength is λ
0Laser in the common resonant chamber, propagate vibration, described second wavelength is λ
2The laser levels TRANSITION LASER also in the common resonant chamber, propagate vibration.Described wavelength is λ
0Laser beam during by described self-stimulated Raman scattering medium because the stimulated Raman scattering effect, making wavelength is λ
0The laser frequency displacement to have produced first wavelength be λ
1Excited Raman frequency shift laser, and still in the common resonant chamber, propagate vibration.When described first wavelength is λ
1The excited Raman frequency shift laser beam and second wavelength be λ
2The incident simultaneously of laser levels TRANSITION LASER light beam and by non-linear and frequently during crystal because non-linear and interact frequently, produced that to be different from first wavelength be λ
1With second wavelength be λ
2New three-wavelength be λ
3And frequency laser, and by the output of shared output coupling mirror.
Wherein, described λ
1, λ
2And λ
3Should satisfy with frequency and concern 1/ λ
3=1/ λ
2+ 1/ λ
1Described non-linear with crystal need be by described λ frequently
1And λ
2The direction cutting that is complementary of non-linear and frequently interactional position, make described λ
2, λ
3And λ
1Described non-linear and satisfy the position relation that is complementary when frequently propagating in the crystal
Wherein,
With
All be vector, and be respectively that described wavelength is λ
1Excited Raman frequency shift laser, wavelength be λ
2Laser levels TRANSITION LASER and wavelength be λ
3With frequency laser in described non-linear and refractive index when frequently propagating in the crystal.
By above-mentioned The Application of Technology, the excited Raman of cramped construction of the present utility model and frequency laser Wavelength converter can effectively be widened available singlet optical maser wavelength quantity.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Below in conjunction with drawings and embodiments the utility model is described in further detail.
Fig. 1 is the excited Raman of cramped construction of the present utility model and the structural representation of frequency laser Wavelength converter one embodiment.
Fig. 2 is the further improved structural representation of the embodiment that discloses among Fig. 1.
Number in the figure explanation: 1, common resonant chamber mirror, 2, the self-stimulated Raman scattering medium, 3, non-linear and crystal frequently, 4, shared output coupling mirror, 5, new self-stimulated Raman scattering medium.
Embodiment
Embodiment 1:
Referring to shown in Figure 1, a kind of excited Raman of cramped construction and frequency laser Wavelength converter, comprise a public resonant cavity, described public resonant cavity comprises a shared resonator mirror 1 and a shared output coupling mirror 4, is disposed with a self-stimulated Raman scattering medium 2 and a non-linear and frequency crystal 3 between described common resonant chamber mirror 1 and the described shared output coupling mirror 4.
Preferably, referring to shown in Figure 2, the preparation of the related film of common resonant chamber mirror 1 system is constituted new self-stimulated Raman scattering medium 5 on the input surface of described self-stimulated Raman scattering medium 2, thereby cancel independent lens, wherein, the surface of described new self-stimulated Raman scattering medium 5 can be a concave surface, also can be plane or convex surface.
Below with preferred scheme the utility model is done further detailed description:
Wherein, described new self-stimulated Raman scattering medium 5 adopts the self-stimulated Raman crystal of Nd:GdVO4 of the laser transition spectral line with 1064nm and 1342nm wavelength, itself and described non-linear and frequently the rightabout surface of crystal 3 can be plane or curved surface, preparation is that the beam reflection rate of 1064nm, 1342nm and 1175nm is greater than 99.5% to wavelength, the light beam transmitance that to wavelength is 808nm is greater than 90% multilayer dielectric film, and the another side preparation is that the light beam transmitance of 1064nm, 1342nm and 1175nm is greater than 99% anti-reflection film to wavelength.
Further, non-linear and frequency crystal 3 adopts non-linear and frequency crystal such as LBO, BiBO, KTP or KTA, by the direction cutting that is complementary of 1342nm wavelength and 1175nm wavelength and the position that produces the 626nm wavelength frequently, two logical light faces non-linear and crystal 3 frequently all prepare the anti-reflection film to the light beam of four wavelength such as 1064nm, 1342nm, 1175nm and 626nm.
Further, shared output coupling mirror 4 close non-linear and the skin covering of the surface system preparation of crystal 3 frequently require for to the reflectivity of the light beam of 1064nm, 1342nm and three wavelength of 1175nm greater than 99.5% multilayer dielectric film, to the light beam transmitance of 626nm wavelength greater than 90% anti-reflection film, another face preparation to the light beam transmitance of 626nm wavelength greater than 99% anti-reflection film.
When the Nd:GdVO4 crystal in the Raman resonant cavity during by the external light source pumping, having produced wavelength is the laser transition of 1064nm and 1342nm wavelength, wavelength is that the laser beam of 1064nm wavelength is when the Nd:GdVO4 crystal, because it is the laser of 1175nm wavelength that the stimulated Raman scattering effect makes the laser frequency displacement of 1064nm wavelength produce wavelength, the laser of the laser of this wavelength and 1064nm and 1342nm wavelength is propagated vibration simultaneously in public resonant cavity; Because non-linear and frequently crystal 3 be by 1342nm and 1175nm wavelength and the position that the produces the 626nm wavelength frequently direction cutting that is complementary, during when the laser incident simultaneously of 1342nm and 1175nm wavelength and by non-linear and frequency crystal 3, because nonlinear optics and interaction frequently, produced wavelength and be 626nm's and frequency laser, and by shared output coupling mirror 4 outputs.
Embodiment 2:
Present embodiment and implementation column 1 structural similarity are that new self-stimulated Raman scattering medium 5 adopts the laser transition spectral line of the 1064nm of the self-stimulated Raman crystal of Nd:GdVO4 and 1084nm wavelength respectively as wavelength X
0With second wavelength X
2This crystal and described non-linear and frequently the rightabout surface of crystal 3 can be plane or curved surface, preparation is that the beam reflection rate of 1064nm, 1084nm and 1175nm is greater than 99.5% to wavelength, the light beam transmitance that to wavelength is 808nm is greater than 90% multilayer dielectric film, and the another side preparation is that the light beam transmitance of 1064nm, 1084nm and 1175nm is greater than 99% anti-reflection film to wavelength.
Further, non-linear and frequency crystal 3 adopts non-linear and frequency crystal such as LBO, BiBO, KTP or KTA, by the direction cutting that is complementary of 1084nm wavelength and 1175nm wavelength and the position that produces the 564nm wavelength frequently, two logical light faces non-linear and crystal 3 frequently all prepare the anti-reflection film to the light beam of four wavelength such as 1064nm, 1084nm, 1175nm and 564nm.
Further, shared output coupling mirror 4 close non-linear and the skin covering of the surface system preparation of crystal 3 frequently require for to the reflectivity of the light beam of 1064nm, 1084nm and three wavelength of 1175nm greater than 99.5% multilayer dielectric film, to the light beam transmitance of 564nm wavelength greater than 90% anti-reflection film, another face preparation to the light beam transmitance of 564nm wavelength greater than 99% anti-reflection film.
When the Nd:GdVO4 crystal in the Raman resonant cavity during by the external light source pumping, having produced wavelength is the laser transition of 1064nm and 1084nm wavelength, wavelength is that the laser beam of 1064nm wavelength is when the Nd:GdVO4 crystal, because it is the laser of 1175nm wavelength that the stimulated Raman scattering effect makes the laser frequency displacement of 1064nm wavelength produce wavelength, the laser of the laser of this wavelength and 1064nm and 1084nm wavelength is propagated vibration simultaneously in public resonant cavity; Because non-linear and frequently crystal 3 be by 1084nm and 1175nm wavelength and the position that the produces the 564nm wavelength frequently direction cutting that is complementary, during when the laser incident simultaneously of 1084nm and 1175nm wavelength and by non-linear and frequency crystal 3, because nonlinear optics and interaction frequently, produced wavelength and be 564nm's and frequency laser, and by shared output coupling mirror 4 outputs.
The foregoing description just is to allow the one of ordinary skilled in the art can understand content of the present utility model and enforcement according to this for technical conceive of the present utility model and characteristics being described, its objective is, can not limit protection range of the present utility model with this.The variation or the modification of every equivalence of having done according to the essence of the utility model content all should be encompassed in the protection range of the present utility model.
Claims (5)
1. the self-stimulated Raman of a cramped construction and frequency laser Wavelength converter, comprise a public resonant cavity, described public resonant cavity comprises a shared resonator mirror (1) and a shared output coupling mirror (4), it is characterized in that: be disposed with a self-stimulated Raman scattering medium (2) and a non-linear and frequency crystal (3) between described common resonant chamber mirror (1) and the described shared output coupling mirror (4).
2. the self-stimulated Raman of cramped construction according to claim 1 and frequency laser Wavelength converter, it is characterized in that: the related film system preparation of described common resonant chamber mirror (1) constitutes new self-stimulated Raman scattering medium (5) on the input surface of described self-stimulated Raman scattering medium (2).
3. the self-stimulated Raman of cramped construction according to claim 2 and frequency laser Wavelength converter, it is characterized in that: described new self-stimulated Raman scattering medium (5) surface can be any one in concave surface, plane or the convex surface.
4. according to the self-stimulated Raman and the frequency laser Wavelength converter of any described cramped construction in the claim 1 to 3, it is characterized in that: described non-linear and frequently crystal (3) for LBO, BiBO, KTP or KTA is non-linear and any one in the crystal frequently.
5. according to the excited Raman and the frequency laser Wavelength converter of claim 2 or 3 described cramped constructions, it is characterized in that: described new self-stimulated Raman scattering medium (5) adopts the self-stimulated Raman crystal of Nd:GdVO4.
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|---|---|---|---|
| CN2010206135781U CN201860030U (en) | 2010-11-18 | 2010-11-18 | Self-stimulated Raman sum frequency laser wavelength converting device with compact structure |
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| CN2010206135781U CN201860030U (en) | 2010-11-18 | 2010-11-18 | Self-stimulated Raman sum frequency laser wavelength converting device with compact structure |
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| CN201860030U true CN201860030U (en) | 2011-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055129A (en) * | 2010-11-18 | 2011-05-11 | 苏州生物医学工程技术研究所 | Self-stimulated Raman sum frequency laser wavelength conversion device with compact structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055129A (en) * | 2010-11-18 | 2011-05-11 | 苏州生物医学工程技术研究所 | Self-stimulated Raman sum frequency laser wavelength conversion device with compact structure |
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20160923 Address after: Kolding road high tech Zone of Suzhou City, Jiangsu Province, No. 88 215163 Patentee after: SUZHOU INSTITUTE OF BIOMEDICAL ENGINEERING AND TECHNOLOGY, CHINESE ACADEMY OF SCIENCES Address before: 215000 No. 14 Longshan Road, hi tech Zone, Jiangsu, Suzhou Patentee before: Suzhou Institute of Biomedical Engineering and Technology |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161216 Address after: 300300 Dongli economic and Technological Development Zone, Tianjin Road, No. 1, room 107-05, No. 1 Patentee after: The state of Tianjin Ka Yip Medical Technology Development Co. Ltd. Address before: Kolding road high tech Zone of Suzhou City, Jiangsu Province, No. 88 215163 Patentee before: SUZHOU INSTITUTE OF BIOMEDICAL ENGINEERING AND TECHNOLOGY, CHINESE ACADEMY OF SCIENCES |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20191118 |