CN1725581A - Diffusion interlinked high stable integral solid laser cavity resonator - Google Patents
Diffusion interlinked high stable integral solid laser cavity resonator Download PDFInfo
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- CN1725581A CN1725581A CN 200410070601 CN200410070601A CN1725581A CN 1725581 A CN1725581 A CN 1725581A CN 200410070601 CN200410070601 CN 200410070601 CN 200410070601 A CN200410070601 A CN 200410070601A CN 1725581 A CN1725581 A CN 1725581A
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Abstract
This invention relates to a stable and integrated solid laser resonator of diffusion and bond including a laser working substance Nd: YAG crystal, Q switch Gr4+:YAG crystal and YAG crystal of a pyramid prism, which are integrated as one by diffusing and bonding and an output mirror of an optical glass material outputting laser 946nm or 1064nm, the integrated structure of which increases the effective radiation area and radiation ability and increases the entire efficiency and ability of anti-breaking.
Description
Technical field
The present invention relates to a kind of resonant cavity of solid state laser; Be the high stability Nd:YAG/Cr that adopts diffusion interlinked fabrication techniques specifically
4+: the YAG/YAG integral solid laser cavity resonator.
Background technology
Resonant cavity of solid state laser with the work of high repetition frequency Q switching mode mainly comprises optical resonator, endovenous laser operation material and Q switching etc.Cr
4+: physical and chemical performance is stable because of having for the YAG crystal, anti-laser-damaged threshold value height, need not advantage such as peripheral driver power supply, is extensively used as passive Q-switch.But because Cr
4+: there is excited state absorption in the YAG crystal, in the laser works process, and Cr
4+: the YAG crystal can absorption portion vibration in the chamber laser energy and generate heat, this not only can cause the decline of laser whole efficiency, what is more important is at laser during with high repetition frequency, high-peak power work, owing to being generally laminar Cr
4+: YAG crystal side surface heat radiation difficulty, temperature can constantly rise, and finally causes the laser can't operate as normal.Even adopt special radiator structure, as air-cooled or Cr is being installed
4+: water flowing cooling etc. is set in the mechanical clamp of YAG crystal, can not finely solves.Therefore, discrete passive Q-switch only is applicable to the solid state laser of low-repetition-frequency or little energy mode work.Simultaneously, more by the logical light face of laser resonant cavity that discrete optical component is formed, loss is big, and pollutes easily, when particularly working under the high-peak power condition, causes logical light surface damage easily, reduces the reliability of laser.In addition, the laser resonant cavity of being made up of discrete optical component is subjected to the influence of variation of ambient temperature or mechanical oscillation easily, causes the resonant cavity imbalance.In a word, the laser resonant cavity design theory is gradually improved, and technological means is constantly ripe, but as realizing high power, high efficiency and high stability solid state laser, development new pattern laser technology and technology are still the problem that the Solid State Laser technology faces.
Summary of the invention
The object of the present invention is to provide a kind of will be as the Cr of passive Q-switch
4+: the diffusion interlinked high stable integral solid laser cavity resonator that YAG crystal and Nd:YAG operation material and unadulterated, as to be processed into prism of corner cube YAG crystal are integrated through diffusion bond.
The high stable integral solid laser cavity resonator that the present invention is diffusion interlinked comprises working-laser material Nd:YAG crystal, Q switching Cr
4+: the YAG crystal, wherein at Cr
4+: YAG crystal two ends by diffusion interlinked, connect as one the YAG crystal of Nd:YAG crystal and prism of corner cube respectively; The outer face of Nd:YAG crystal is the plane, or radius is the concave surface of 0.1m～10m, or radius is the convex surface of 0.1m～10m; And plating is 5%～90% deielectric-coating to 1064nm wavelength transmissivity on the outer face of Nd:YAG crystal, and output wavelength is the laser of 1064nm; Or plating is 98%～100% to 1064nm wavelength transmissivity and is 5%～85% deielectric-coating to 946nm wavelength transmissivity on this outer face, and output wavelength is the laser of 946nm.
The high stable integral solid laser cavity resonator that the present invention is diffusion interlinked, install the outgoing mirror that optical glass material is made additional before wherein also being included in the outer face of Nd:YAG crystal, the surface of this outgoing mirror is the plane, or radius is the concave surface of 0.1m～10m, or radius is the convex surface of 0.1m～10m; And plate broad-band transparence-increased film in Nd:YAG crystal outer face; And plating is 5%～90% deielectric-coating to 1064nm wavelength transmissivity on the surface in opposite directions, outer face of outgoing mirror and Nd:YAG crystal, and output wavelength is the laser of 1064nm; Or plating is 98%～100% to 1064nm wavelength transmissivity and is 5%～85% deielectric-coating to 946nm wavelength transmissivity on this outer face, and output wavelength is the laser of 946nm.
The high stable integral solid laser cavity resonator that the present invention is diffusion interlinked wherein also comprises with the discrete installation of the prism of corner cube of YAG crystal, at Cr
4+: the diffusion interlinked YAG crystal of this end of YAG crystal separation; The outer face of YAG crystal is the plane, or radius is the concave surface of 0.1m～10m, or radius is the convex surface of 0.1m～10m; The outer face of prism of corner cube is the plane, and all plates broad-band transparence-increased film on the outer face of the outer face of YAG crystal and prism of corner cube.
The high stable integral solid laser cavity resonator that the present invention is diffusion interlinked, the Cr that will have the passive Q-switch function
4+: the YAG crystal with have difference in functionality, be integrated with the Nd:YAG crystal and the YAG crystal diffusion bond of host material.This integral structure can make the Cr as passive Q-switch
4+: YAG crystal and Nd:YAG crystal together are immersed in the cooling water, by current heat transferred are gone out, and have significantly improved efficiently radiates heat area and heat-sinking capability, have overcome to adopt in the laser resonant cavity of discrete component Cr
4+: the problem of the heat-sinking capability deficiency that the YAG crystal can only cause by the metal fixture heat loss through conduction that contacts with side surface; And Cr
4+: the heat that produces during the work of YAG crystal also can conduct to the YAG crystal by bonding face, has further improved heat-sinking capability.Simultaneously, a plurality of optical component bondings are one, have reduced logical light face quantity, have improved the whole efficiency and the anti-damage ability of laser.In addition, because the completely reflecting mirror of resonant cavity adopts the prism of corner cube of incident ray and emergent ray keeping parallelism, thereby the anti-imbalance ability of completely reflecting mirror greatly improves.In a word, adopt the Nd:YAG/Cr of diffusion interlinked fabrication techniques
4+: the YAG/YAG integral solid laser cavity resonator makes the performance of laser more reliable and more stable, and is more suitable for working under high repetition frequency, high-peak power condition.
Description of drawings
Fig. 1 is the diffusion interlinked high stable integral solid laser cavity resonator example structure principle schematic of the present invention;
Fig. 2 is diffusion interlinked high stable integral solid laser cavity resonator the 2nd example structure principle schematic of the present invention;
Fig. 3 is diffusion interlinked high stable integral solid laser cavity resonator the 3rd example structure principle schematic of the present invention;
Fig. 4 is diffusion interlinked high stable integral solid laser cavity resonator the 4th example structure principle schematic of the present invention.
Embodiment
As seen from Figure 1, the high stable integral solid laser cavity resonator that the present invention is diffusion interlinked is at the Cr of Q switching
4+: YAG crystal 2 two ends by diffusion interlinked, connect as one the YAG crystal 3 of the Nd:YAG crystal 1 of working-laser material and prism of corner cube respectively; The outer face of Nd:YAG crystal 1 is the plane, makes the outgoing mirror of resonant cavity.And plating is 5%～90% deielectric-coating to 1064nm wavelength transmissivity on the outer face of Nd:YAG crystal 1, and output wavelength is the laser of 1064nm; Or plating is 98%～100% to 1064nm wavelength transmissivity and is 5%～85% deielectric-coating to 946nm wavelength transmissivity on this outer face, and output wavelength is the laser of 946nm.Pyramid cone prism 3 is a completely reflecting mirror.
Fig. 2 is diffusion interlinked high stable integral solid laser cavity resonator the 2nd example structure principle schematic of the present invention; Install the outgoing mirror 4 that optical glass material is made before the outer face of the Nd:YAG of working-laser material crystal 1 additional, the surface of this outgoing mirror 4 is the plane; And the broad-band transparence-increased film of plating on the transverse plane outside Nd:YAG crystal 1, and plating is 5%～90% deielectric-coating to 1064nm wavelength transmissivity on the surface in opposite directions, outer face of outgoing mirror 4 and Nd:YAG crystal 1, output wavelength is the laser of 1064nm.Same or on this outer face plating be 98%～100% to 1064nm wavelength transmissivity and be 5%～85% deielectric-coating that output wavelength is the laser of 946nm to 946nm wavelength transmissivity.
Fig. 3 and Fig. 4 are other two kinds of embodiment, and it is with the YAG crystal 3 of prism of corner cube and the Cr of Q-switch
4+: the YAG crystal 2 is separated, simultaneously at Cr
4+: diffusion interlinked and YAG crystal 3 prism of corner cube have the YAG crystal 5 of same material on this end face of YAG crystal 2, the YAG crystal 3 outer face of this crystal 5 outer face and prism of corner cube is the plane, and plating broad-band transparence-increased film, the YAG crystal 3 of prism of corner cube is made completely reflecting mirror, is installed separately.The outer face of the Nd:YAG crystal 1 of working-laser material is an outgoing mirror, plates different deielectric-coating, can output wavelength be the laser beam of 1064nm or 946nm equally.Also can install the outgoing mirror 4 that optical glass material is made additional before the outer face of the Nd:YAG of working-laser material crystal 1 as the 2nd embodiment, the surface of this outgoing mirror 4 is the plane; Broad-band transparence-increased film is plated in the outer face of the Nd:YAG crystal 1 of working-laser material, and plates different deielectric-coating on the surface of outgoing mirror 4, can output wavelength be the laser beam of 1064nm or 946nm equally.
Claims (4)
1, a kind of diffusion interlinked high stable integral solid laser cavity resonator comprises working-laser material Nd:YAG crystal, Q switching Cr
4+: the YAG crystal is characterized in that at described Cr
4+: YAG crystal two ends by diffusion interlinked, connect as one the YAG crystal of Nd:YAG crystal and prism of corner cube respectively; The outer face of described Nd:YAG crystal is the plane, or radius is the concave surface of 0.1m～10m, or radius is the convex surface of 0.1m～10m, and plating is 5%～90% deielectric-coating to 1064nm wavelength transmissivity on the outer face of described Nd:YAG crystal, and output wavelength is the laser of 1064nm; Or plating is 98%～100% to 1064nm wavelength transmissivity and is 5%～85% deielectric-coating to 946nm wavelength transmissivity on this outer face, and output wavelength is the laser of 946nm.
2, diffusion interlinked high stable integral solid laser cavity resonator according to claim 1, install the outgoing mirror that optical glass material is made additional before it is characterized in that also being included in the outer face of described Nd:YAG crystal, the surface of this outgoing mirror is the plane, or radius is the concave surface of 0.1m～10m, or radius is the convex surface of 0.1m～10m; And plate broad-band transparence-increased film in described Nd:YAG crystal outer face; And plating is 5%～90% deielectric-coating to 1064nm wavelength transmissivity on the surface in opposite directions, outer face of described outgoing mirror and described Nd:YAG crystal, and output wavelength is the laser of 1064nm; Or plating is 98%～100% to 1064nm wavelength transmissivity and is 5%～85% deielectric-coating to 946nm wavelength transmissivity on this outer face, and output wavelength is the laser of 946nm.
3, diffusion interlinked high stable integral solid laser cavity resonator according to claim 1 is characterized in that also comprising with the discrete installation of the prism of corner cube of described YAG crystal, at described Cr
4+: the diffusion interlinked YAG crystal of this end of YAG crystal separation; The outer face of described YAG crystal is the plane, or radius is the concave surface of 0.1m～10m, or radius is the convex surface of 0.1m～10m; The outer face of described prism of corner cube is the plane, and all plates broad-band transparence-increased film on the outer face of the outer face of described YAG crystal and described prism of corner cube.
4, according to claim 2 or 3 described diffusion interlinked high stable integral solid laser cavity resonators, install the outgoing mirror that optical glass material is made additional before it is characterized in that also being included in the outer face of described Nd:YAG crystal, the surface of this outgoing mirror is the plane, or radius is the concave surface of 0.1m～10m, or radius is the convex surface of 0.1m～10m; And plate broad-band transparence-increased film in described Nd:YAG crystal outer face; And plating is 5%～90% deielectric-coating to 1064nm wavelength transmissivity on the surface in opposite directions, outer face of described outgoing mirror and described Nd:YAG crystal, and output wavelength is the laser of 1064nm; Or plating is 98%～100% to 1064nm wavelength transmissivity and is 5%～85% deielectric-coating to 946nm wavelength transmissivity on this outer face, and output wavelength is the laser of 946nm.
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| CN 200410070601 CN1725581A (en) | 2004-07-22 | 2004-07-22 | Diffusion interlinked high stable integral solid laser cavity resonator |
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| CN 200410070601 CN1725581A (en) | 2004-07-22 | 2004-07-22 | Diffusion interlinked high stable integral solid laser cavity resonator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944703A (en) * | 2010-07-30 | 2011-01-12 | 北京工业大学 | Preparation technique of laser bar by terminating Cr4+:YAG |
| CN101931160B (en) * | 2009-11-24 | 2013-06-26 | 成都东骏激光股份有限公司 | Laser gain medium |
| CN105048263A (en) * | 2015-09-02 | 2015-11-11 | 哈尔滨工业大学 | No-debugging miniature laser device ignition device and method |
| CN109921272A (en) * | 2019-03-20 | 2019-06-21 | 中国科学院半导体研究所 | Totally-enclosed crystal bonding laser resonator without the air gap |
| CN116260033A (en) * | 2022-12-05 | 2023-06-13 | 中国电子科技集团公司第十一研究所 | Bonding integrated miniature laser |
-
2004
- 2004-07-22 CN CN 200410070601 patent/CN1725581A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931160B (en) * | 2009-11-24 | 2013-06-26 | 成都东骏激光股份有限公司 | Laser gain medium |
| CN101944703A (en) * | 2010-07-30 | 2011-01-12 | 北京工业大学 | Preparation technique of laser bar by terminating Cr4+:YAG |
| CN105048263A (en) * | 2015-09-02 | 2015-11-11 | 哈尔滨工业大学 | No-debugging miniature laser device ignition device and method |
| CN109921272A (en) * | 2019-03-20 | 2019-06-21 | 中国科学院半导体研究所 | Totally-enclosed crystal bonding laser resonator without the air gap |
| CN116260033A (en) * | 2022-12-05 | 2023-06-13 | 中国电子科技集团公司第十一研究所 | Bonding integrated miniature laser |
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