CN104124606A - Laser amplification structure - Google Patents
Laser amplification structure Download PDFInfo
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- CN104124606A CN104124606A CN201310151906.9A CN201310151906A CN104124606A CN 104124606 A CN104124606 A CN 104124606A CN 201310151906 A CN201310151906 A CN 201310151906A CN 104124606 A CN104124606 A CN 104124606A
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- pump light
- gain medium
- pump
- laser amplifier
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Abstract
The invention discloses a laser amplification structure, which comprises a pump light source, a pump light coupling system, a seed light source, an incident light collimator, an emergent light collimator, and a laser gain medium, and is characterized by further comprising an off-axis integrated cavity in an off-axis light cavity detuning state and not forming stimulated emission, wherein the laser gain medium is located inside the off-axis integrated cavity. According to the laser amplification structure, the off-axis integrated cavity is adopted, the laser gain medium is located inside the off-axis integrated cavity, the pump light carries out pump from the end face or the side face, and the seed light is reflected for multiple times inside the integrated cavity and is amplified via the laser gain medium. The laser amplification structure has the advantages of simple structure, high energy extraction efficiency, low production cost, mass production and the like.
Description
Technical field
The present invention relates to laser field, relate in particular to the laser structure for amplifying of a kind of employing from axle integration chamber.
Background technology
LD pumped solid laser amplifier architecture, is pump light incident laser material, and produces gain in laser material.This structure can produce laser for amplifying or increasing in to laser material under resonant feedback, and as light source.The luminous power output that a lot of application requirements of laser strengthen, but because the unreasonable multiplication factor that makes of seed source Energy extraction mechanism is limited, but the repeatedly folding light channel structure of seed light can increase distance that light beam passes through in gain media and the area coverage of pumped region, and then can improve largely the energy extraction efficiency of seed light, and be applicable to various materials, thereby obtained going deep into and research and application widely.In solid state laser, the one way or the round trip folding light channel structure that generally adopt multiple flat mirror reflects devices or use plane to be combined with curved reflector.For laser amplifier, these schemes all have weak point, and exist and regulate difficulty large, complex structure, every process primary event angle of reflection and width all can increase certain multiple, are unfavorable for carrying out multiple reflections and improve output beam quality.
China Patent Publication No. is CN101017954A's the technical scheme of " having laser amplifier and the laserresonator of multiple reflection folding light channel structure ", comprise: two curved reflectors, and gain medium between two curved reflectors, also can be added with and be positioned at described light channel structure resonant cavity mirror in addition, these two curved reflector relative tilts are placed, form the non-non-confocal structure of looking in the distance, the laser beam of injecting described light channel structure forms folded optical path by described two curved reflector multiple reflections, repeatedly passes through gain media.Employing said method can solve the energy extraction efficiency problem of seed light to a certain extent, and structure is simpler.But this structure still exists the adjusting difficulty of reflecting surface large, the seed hot spot being exaggerated is of poor quality, is difficult to realize seed light pattern and pump light matched well, and then affects extraction efficiency.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of basis from axle integration chamber technology, can realize the repeatedly amplification of seed light, obtain the output of high power high-amplification-factor high light beam quality, and there is compact conformation, be easy to microplate, laser structure for amplifying cheaply.
For achieving the above object, technical scheme proposed by the invention is: a kind of laser amplifier structure, comprise pump light source, pump light coupled system, seed light source, incident light collimater, emergent light collimater, gain medium, it is characterized in that: also comprise that one in from axle optical cavity off resonance state, can not form stimulated emission from axle integration chamber, described gain medium is placed in axle integration chamber.
Further, described pump light source is that multimembrane LD array pumping source, pump light coupled system are end pumping optically coupled system; Described multimembrane LD array pumping source, the side that end pumping optically coupled system is located at gain medium.
Further, the logical light face of described gain medium can the sanding and polishing shape such as face or convex surface in echelon, described pump light source is multimembrane LD array pumping light source, described pump light coupled system is profile pump optically coupled system, described profile pump optically coupled system, the side that multimembrane LD array pumping light source is located at gain medium successively.
Further, described pump light coupled system is post lens, bare fiber line or set of lenses, and pump beam is carried out to a collimation on compression focusing and another orthogonal direction in direction.
Further, the all light faces of described pump light coupled systemes are coated with pump light anti-reflection film, the logical light face of gain medium is coated with pump light and seed light anti-reflection film, be coated with pump light and seed light high-reflecting film from the Effect of Back-Cavity Mirror concave surface in axle integration chamber, be coated with to pump light anti-reflection film with to seed light high-reflecting film from the front cavity mirror concave surface in axle integration chamber, its plane is coated with pump light anti-reflection film.
Further, described from axle integration chamber be average from axocoel, plano-concave from axocoel and concave-concave from axocoel etc.
Further, described gain medium and the gain media that is made into integral microchip structure from axle integration chamber are from axle integration chamber.
Adopt technique scheme, laser amplifier structure of the present invention, adopts from axle integration chamber, by gain medium being placed in integration chamber, pump light carries out pumping from end face or side, and seed light is exaggerated by gain medium through multiple reflections in integration chamber.Laser structure for amplifying of the present invention has simple in structure, and energy extraction efficiency is high, and production cost is low, is applicable to the advantages such as batch product.
Brief description of the drawings
Fig. 1 is laser amplifier structure embodiment of the present invention 1 structure chart;
Fig. 2 is laser amplifier structure embodiment of the present invention 2 structure charts;
Fig. 3 is laser amplifier structure embodiment of the present invention 3 structure charts;
Wherein, 101. multimode LD pumping sources, 102. pump light coupled systems, 103. gain mediums, 104. incident light collimaters, 105. emergent light collimaters, 106. integration chamber Effect of Back-Cavity Mirror, 107. integration chamber front cavity mirrors, 201. gain medias from axle integration chamber, 301. trapezoidal gain mediums, 302. profile pump optically coupled systems, 303. multimode LD array pumping sources.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1: as shown in Figure 1, high-power multimode LD pumping source 101 adopts end pumping mode to launch pump light, through pump light coupled system 102, pump beam is carried out to a collimation on compression focusing and another orthogonal direction in direction, end pumping optically coupled system is post lens or bare fiber line or lens combination, by integration chamber front cavity mirror 107 incident laser gain medias 103, gain medium 103 cores are laterally better absorbed compared with obtaining in large size range compared with high pump power density subsequently.Through gain medium 103 at the residual pump light not being fully absorbed in once passing after the reflection from axle integration chamber Effect of Back-Cavity Mirror 106, through gain medium 103, most pump energies is absorbed by gain medium 103 for the second time.Seed light gain medium 103 from the side incident of integration chamber Effect of Back-Cavity Mirror 106 from axle integration chamber by incident collimater 104 by pumped region and through the repeatedly intracavity reflecting of integration chamber front cavity mirror 107 and integration chamber Effect of Back-Cavity Mirror 106 and be amplified, the seed light of finally amplifying is penetrated collimater 105 by the opposite side import and export of integration chamber Effect of Back-Cavity Mirror 106, wherein can adopt local plated film or punching to realize seed light input, incident seed light also can be from the side incident of integration chamber front cavity mirror 107.Seed light can be by optical fiber collimator incident from axle integration chamber, or the seed laser after collimation is regulated it is entered from axle integration chamber by speculum.In debug process, can obtain best extraction efficiency by changing seed light incident angle.The integration chamber Effect of Back-Cavity Mirror 106 of this structure can adopt the cylindrical mirror with pump light coupled system 102 identical placement directions, to reach pump light reflection-absorption back and forth in chamber to greatest extent.Wherein can adopt various cavity shape structures from axle integration chamber, as: average from axocoel, plano-concave from axocoel and concave-concave from axocoel etc., and integration chamber is in from axle optical cavity off resonance state, can not form stimulated emission.In seed light amplification process, in order to prevent the generation of spontaneous radiation, can adopt the first incident seed light working method of input pumping light again.Further, the described logical light face of pump light coupled system 102 is coated with pump light anti-reflection film, the logical light face of gain medium 103 is coated with pump light and seed light anti-reflection film, integration chamber Effect of Back-Cavity Mirror 106 concave surfaces are coated with pump light and seed light high-reflecting film, integration chamber front cavity mirror 107 concave surfaces are coated with to pump light anti-reflection film with to seed light high-reflecting film, and its plane is coated with pump light anti-reflection film.Utilize this kind from axle integration chamber laser amplifier structure, can amplify continuous or pulse seed light to greatest extent, if form several meters or tens meters of seed light amplification channels, can form type optical fiber amplifier architecture.
Embodiment 2: as shown in Figure 2, logical the front and back of gain medium 103 light face sanding and polishing is become to convex surface, be coated with corresponding anti-reflection film and high-reflecting film simultaneously, and then replace from Effect of Back-Cavity Mirror 106 and 107 before axle integration chamber, realize the gain media that gain medium and integration chamber mirror are made into integral microchip structure from axle integration chamber 201, other each several part structures are identical with the structure of embodiment 1, repeat no more in this.
Embodiment 3: as shown in Figure 3, that trapezoidal gain medium 301 is placed in from axle integration chamber, LD pumping source 303 carries out pumping to it from the side, and this pumping configuration can use LD array to carry out pumping, and described pump mode can be continuous pumping or pulse pump.For each single tube LD pumping configuration, can adopt fiber optic collimator system 302 that a direction is dispersed naturally, and make light beam on another orthogonal direction converge the size different into width, with this pumping gain media.Other each several part structures are identical with the structure of embodiment 1, repeat no more in this.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; in the form and details the present invention is made a variety of changes, be protection scope of the present invention.
Claims (9)
1. a laser amplifier structure, comprise pump light source, pump light coupled system, seed light source, incident light collimater, emergent light collimater, gain medium, it is characterized in that: also comprise that one in from axle optical cavity off resonance state, can not form stimulated emission from axle integration chamber, described gain medium is placed in axle integration chamber.
2. a kind of laser amplifier structure according to claim 1, is characterized in that: described pump light source is that multimembrane LD array pumping source, pump light coupled system are end pumping optically coupled system; Described multimembrane LD array pumping source, the side that end pumping optically coupled system is located at gain medium.
3. a kind of laser amplifier structure according to claim 1, it is characterized in that: the logical light face of described gain medium can the sanding and polishing shape such as face or convex surface in echelon, described pump light source is multimembrane LD array pumping light source, described pump light coupled system is profile pump optically coupled system, described profile pump optically coupled system, the side that multimembrane LD array pumping light source is located at gain medium successively.
4. according to a kind of laser amplifier structure described in the arbitrary claim of claim 1-3, it is characterized in that: described pump light coupled system is post lens, bare fiber line or set of lenses.
5. according to a kind of laser amplifier structure described in the arbitrary claim of claim 1-3, it is characterized in that: described from axle integration chamber is average from axocoel, plano-concave from axocoel and concave-concave from axocoel etc.
6. according to a kind of laser amplifier structure described in the arbitrary claim of claim 1-3, it is characterized in that: described gain medium and the gain media that is made into integral microchip structure from axle integration chamber are from axle integration chamber.
7. according to a kind of laser amplifier structure described in the arbitrary claim of claim 1-3, it is characterized in that: all light faces of described pump light coupled systemes are coated with pump light anti-reflection film.
8. according to a kind of laser amplifier structure described in the arbitrary claim of claim 1-3, it is characterized in that: the logical light face of described gain medium is coated with pump light and seed light anti-reflection film.
9. according to a kind of laser amplifier structure described in the arbitrary claim of claim 1-3, it is characterized in that: the described Effect of Back-Cavity Mirror concave surface from axle integration chamber is coated with pump light and seed light high-reflecting film, the described front cavity mirror concave surface from axle integration chamber is coated with to pump light anti-reflection film with to seed light high-reflecting film, and its plane is coated with pump light anti-reflection film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310151906.9A CN104124606A (en) | 2013-04-27 | 2013-04-27 | Laser amplification structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310151906.9A CN104124606A (en) | 2013-04-27 | 2013-04-27 | Laser amplification structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086072A (en) * | 2019-04-30 | 2019-08-02 | 西安炬光科技股份有限公司 | Pump arrangement and method for pumping |
| CN111562237A (en) * | 2020-05-26 | 2020-08-21 | 中国科学院合肥物质科学研究院 | CO based on double-beam cavity enhanced spectroscopy technology2、N2O stable isotope simultaneous detection device and method |
| CN112615239A (en) * | 2020-12-15 | 2021-04-06 | 武汉菩济医疗科技有限公司 | Laser magnifier and laser magnifier |
| CN117477331A (en) * | 2023-03-28 | 2024-01-30 | 齐鲁中科光物理与工程技术研究院 | Micro-gain overlapped amplifying device and phase compensation and mode matching method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6442186B1 (en) * | 1998-09-21 | 2002-08-27 | Peter Vitruk | Stable multi-fold telescopic laser resonator |
| US6654163B1 (en) * | 1999-06-01 | 2003-11-25 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten | Optical amplifier arrangement for a solid state laser |
| CN101017954A (en) * | 2006-08-01 | 2007-08-15 | 清华大学 | The laser amplifier and laser resonance cavity with the multiple reflection folding light channel structure |
| CN101179175A (en) * | 2007-11-30 | 2008-05-14 | 西安电子科技大学 | Laser diode pumped solid state laser with high peak power |
| US20120300209A1 (en) * | 2011-04-19 | 2012-11-29 | Mark Francis Witinski | Heterodyne Off-Axis Integrated Cavity Output Spectroscopy |
-
2013
- 2013-04-27 CN CN201310151906.9A patent/CN104124606A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6442186B1 (en) * | 1998-09-21 | 2002-08-27 | Peter Vitruk | Stable multi-fold telescopic laser resonator |
| US6654163B1 (en) * | 1999-06-01 | 2003-11-25 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten | Optical amplifier arrangement for a solid state laser |
| CN101017954A (en) * | 2006-08-01 | 2007-08-15 | 清华大学 | The laser amplifier and laser resonance cavity with the multiple reflection folding light channel structure |
| CN101179175A (en) * | 2007-11-30 | 2008-05-14 | 西安电子科技大学 | Laser diode pumped solid state laser with high peak power |
| US20120300209A1 (en) * | 2011-04-19 | 2012-11-29 | Mark Francis Witinski | Heterodyne Off-Axis Integrated Cavity Output Spectroscopy |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086072A (en) * | 2019-04-30 | 2019-08-02 | 西安炬光科技股份有限公司 | Pump arrangement and method for pumping |
| CN111562237A (en) * | 2020-05-26 | 2020-08-21 | 中国科学院合肥物质科学研究院 | CO based on double-beam cavity enhanced spectroscopy technology2、N2O stable isotope simultaneous detection device and method |
| CN112615239A (en) * | 2020-12-15 | 2021-04-06 | 武汉菩济医疗科技有限公司 | Laser magnifier and laser magnifier |
| CN117477331A (en) * | 2023-03-28 | 2024-01-30 | 齐鲁中科光物理与工程技术研究院 | Micro-gain overlapped amplifying device and phase compensation and mode matching method |
| CN117477331B (en) * | 2023-03-28 | 2024-05-14 | 齐鲁中科光物理与工程技术研究院 | Micro-gain overlapped amplifying device and phase compensation and mode matching method |
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