Multi-pass laser amplifier

A technology of laser amplifiers and amplifiers, which is applied to lasers, laser components, phonon exciters, etc., can solve problems such as unsatisfactory laser output beam quality, improve near-field quality, realize real-time correction, and improve far-field quality. Effect

Pending Publication Date: 2017-02-01
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0004] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a multi-pass laser amplifier suitable for high energy and repetition frequency work, which solves the problem of...

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Embodiment 1

[0027] Such as figure 1 As shown, a multi-pass laser amplifier includes a near-field shaping module I, an isolation and input-output module II and a multi-pass amplifier cavity module III along the laser injection direction, and the isolation and input-output module II is provided with a wavefront The measurement module IV simultaneously outputs a beam of measurement light from the isolation and input-output module II to the wavefront measurement module IV. The near-field shaping module 1 is sequentially provided with a polarizer 101, a spatial light modulator 102, and a polarizer 103 along the laser injection direction, and the near-field shaping module based on the spatial light modulator and strict image transfer technology are adopted to significantly improve the output Near-field quality of the laser, the spatial light modulator 102 is an electrical addressable liquid crystal, an optical addressable liquid crystal or a phase plate.

[0028] The isolation and input-output...

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Abstract

The invention discloses a multi-pass laser amplifier, which consists of a near field shaping module I, an isolation and input-output module II, a multi-pass amplifier cavity module III and a wave-front measurement module IV, wherein the near field shaping module I shapes a near field of an input light spot; the isolation and input-output module II completes the input and the output of main laser; the multi-pass amplifier cavity module III mainly carries out high-quality amplification on the main laser; the wave-front measurement IV measures the wave front of output laser, and cooperates with a wave-front corrector to complete the control on the wave front. By using the multi-pass laser amplifier, the laser amplifier which is large in caliber, controllable in gain and good in the quality of an output light spot can be realized; meanwhile, the stability of the output energy of the laser amplifier can be improved; the multi-pass laser amplifier is particularly applicable to the design of a high-power solid laser amplifier under high-gain and repetition-frequency work.

Description

technical field [0001] The invention relates to the technical field of high-power solid-state laser amplifiers under repeated frequency operation, in particular to a multi-pass laser amplifier. Background technique [0002] High-efficiency, high-repetition-frequency high-power solid-state lasers are widely used in material processing, particle acceleration, strong X-ray generation, and laser inertial confinement fusion. Multi-pass laser amplifiers, as an important part of them, have attracted much attention. The multi-pass laser amplifier greatly improves the energy extraction efficiency of the laser amplifier by extracting the energy stored in the amplifier multiple times. However, for the multi-pass laser amplifier under repeated frequency operation, a large amount of waste heat generated during the amplifier operation cannot be discharged in time, and the amplifier gain The medium has obvious thermally induced birefringence, which causes the laser to have thermal depolari...

Claims

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Application Information

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IPC IPC(8): H01S3/10H01S3/106H01S3/115
CPCH01S3/10023H01S3/10015H01S3/1065H01S3/115
Inventor 高松姚轲谢旭东薛峤范琛唐军陈林陈远斌刘勇刘建国卢振华王琳宗兆玉代万俊张鑫田小程党钊郑奎兴
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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