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Wave front-distortion laser device in corrected resonance cavity

A wavefront distortion and resonant cavity technology, applied to the structure/shape of optical resonators, lasers, laser components, etc., can solve the problems of small deformation and insufficient correction of wavefront distortion in the cavity, and achieve low cost , Improve the correction effect, the effect of simple structure

Inactive Publication Date: 2007-04-04
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art that the intracavity adaptive optics laser has a small amount of deformation and insufficient correction of intracavity wavefront distortion, thereby providing an improved laser device for correcting intracavity wavefront distortion, which can Correction of large oblique aberration and large wavefront distortion in the resonant cavity

Method used

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  • Wave front-distortion laser device in corrected resonance cavity
  • Wave front-distortion laser device in corrected resonance cavity
  • Wave front-distortion laser device in corrected resonance cavity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] According to the optical path in Figure 1, a solid-state laser that uses an intracavity adaptive system to correct intracavity wavefront distortion is fabricated. The laser crystal 4 adopts Nd:YAG and is side-pumped by the pump light 5, and the laser device outputs 1064nm laser. The detection laser beam with a wavelength of 632.8nm is reflected by the mirror 6 and then enters the laser resonant cavity. The detection laser beam is coaxial with the oscillation beam in the cavity, and the diameters of the two beams are the same. The detection laser beam passes through the pumped laser crystal 4, is reflected by the tilting mirror 2 and the deformable mirror 3, and reaches the cavity mirror 1; the detection laser beam reaching the cavity mirror 1 is reflected by it, passes through the laser crystal 4 and returns along the original path, and the detection light Two passes through the laser crystal 4. When the returned detection beam passes through the beam splitter 8, a par...

Embodiment 2

[0038] According to the optical path in Figure 1, a solid-state laser that uses an intracavity adaptive system to correct intracavity wavefront distortion is fabricated. Its optical circuit diagram and each device are the same as those in Embodiment 1, except that the pumping method is end-pumping.

[0039] Adjust the cavity mirrors 1 and 7 to make the resonator output 1064nm laser light, and use the type and size of the aberration obtained by the wavefront detection and analysis device 100. The wavefront detection and analysis device 100 outputs a control signal to the drive device 200, thereby rotating the tilting mirror 3 to correct The oblique aberration in the laser crystal changes the shape of the reflective surface of the deformable mirror 2, and corrects other aberrations in the laser crystal except for the oblique aberration, so as to improve the beam quality and output power of the laser output from the laser.

Embodiment 3

[0041] According to the optical path in Figure 2, a solid-state laser that uses an intracavity adaptive system to correct intracavity wavefront distortion is fabricated. Wherein, according to Embodiment 1, the cavity mirror 1 is removed and replaced with an increased second deformable mirror 9; the tilt mirror 3 and the two deformable mirrors 2 and 9 are all connected to the drive device 200; the laser crystal 4 adopts Nd:YVO 4 , is side-pumped by the pumping light 5 , and the laser device outputs 1342nm laser light. The cavity mirror 7 selects the flat mirror surface to be coated with a 1342nm partly transparent film, and the transmittance is 10%, and the other side is plated with an anti-reflection film of 1064nm; 632.8nm high-reflection coating; one side of the beam splitter 8 close to the laser crystal 4 is coated with a 1342nm anti-reflection coating and a 632.8nm total reflection coating, and the other side is coated with a 1342nm anti-reflection coating.

[0042] Adjus...

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Abstract

The invention is concerned with the high-power laser equipment that is using auto-adapted optical technology to adjust the wave-front distortion in the resonant cavity, including: at least two cavity lens, at least one distortional lens, at least one laser crystal, the pumping light, the reflecting lens, at least one splitting beam lens, the wave-front detecting analysis equipment, the driving equipment, at least one tilting lens. The invention is: adds the wave-front controller that is simple structure, low coat and higher controlling precision in the original auto-adapted optical laser system in order to equalize the more tilting aberration in the cavity; uses the distortion lens of the auto-adapted system to equalize the other aberration except the tilting aberration in order to magnify the adjusting effect and ability of the auto-adapted optical system in the laser cavity.

Description

technical field [0001] The invention relates to a laser device, in particular to a high-power laser device which uses adaptive optics technology in a resonant cavity to correct wavefront distortion in a resonant cavity. Background technique [0002] High power, high beam quality solid-state lasers have a wide range of applications in industry, agriculture, scientific research and national defense. During the operation of a high-power solid-state laser, a large amount of waste heat is deposited in the laser medium. When the outside of the laser medium is cooled, a thermal gradient is generated inside the laser medium. The thermal gradient in the solid-state laser medium makes the refractive index distribution in the solid-state laser medium non-uniform, and generates thermal stress in the solid-state laser medium, causing the surface of the solid-state laser medium to deform. When the laser beam passes through these laser media, various aberrations will be generated, which w...

Claims

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Application Information

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IPC IPC(8): H01S3/00H01S3/08G02B26/00
Inventor 许祖彦杨晓冬薄勇彭钦军耿爱丛崔大复
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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