CPA and OPCPA mixed type ultra high power femtosecond laser system

A femtosecond laser and hybrid technology, used in lasers, laser parts, phonon exciters, etc., can solve the problem of poor stability, high requirements for laser beam directivity and stability, and precise adjustment of delay, and optical path adjustment. Complex problems, to achieve the effect of high stability, compact structure, no parasitic oscillation

Inactive Publication Date: 2013-04-24
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

However, the laser system based on pure OPCPA has high requirements on the directivity and stability of the laser bea

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  • CPA and OPCPA mixed type ultra high power femtosecond laser system
  • CPA and OPCPA mixed type ultra high power femtosecond laser system
  • CPA and OPCPA mixed type ultra high power femtosecond laser system

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[0020] figure 1It is a structural schematic diagram of the CPA and OPCPA hybrid ultra-high power femtosecond laser system of the present invention. It can be seen from the figure that the CPA and OPCPA hybrid ultra-high power femtosecond laser system of the present invention includes a titanium sapphire femtosecond mode-locked oscillator 1, a programmable Acousto-optic modulator 2, stretcher 3, CPA amplifier chain 4, Nd:YAG pump source 5, CPA amplifier chain high-energy pump source 6, OPCPA terminal amplifier stage 7, OPCPA amplifier stage high-energy pump source 8, vacuum filter 12 and compressor 13, wherein said CPA amplification chain 4 comprises a regenerative amplifier 14, the first multi-pass amplifier 15, the second multi-pass amplifier 16 and the third multi-pass amplifier 17, and said OPCPA terminal amplification stage 7 comprises The first dichroic mirror 9, the nonlinear crystal 10 and the second dichroic mirror 11, the first dichroic mirror 9 is highly reflective t...

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Abstract

The invention provides a CPA and OPCPA mixed type ultra high power femtosecond laser system which comprises a Ti sapphire femtosecond locked mode impulse hunting device, a programmable acoustic optical modulator, a pulse broadening device, a CPA amplifer chain, an OPCPA terminal amplifier stage, an Nd:YAG pumping source, a CPA amplifier chain pumping source, an OPCPA terminal amplifier stage high-energy pumping source, a vacuum tube and a compressor, wherein pulse laser sequentially passes through the CPA amplifier chain and the OPCPA terminal amplifier stage by broadening of the pulse broadening device, and amplifier laser pulse is compressed by the compressor after transmitted by a vacuum tube image. The CPA and OPCPA mixed type ultra high power femtosecond laser system has the advantages of being high in stability, high in conversion efficiency, high in single-pass gain, free of heat effect, and free of parasitic oscillation, and achieving stable and high-efficiency IOPW stage high-power output, and even laser output of an ES (1018W) stage.

Description

technical field [0001] The present invention relates to a high-power laser system, especially a hybrid ultra-high-power femtosecond laser system of CPA and OPCPA. The CPA is the abbreviation of chirped pulse amplification, and the OPCPA is the abbreviation of optical parametric chirped pulse amplification. , the ultra-high power refers to the focused peak power of the laser reaching PW (10 15 W) above. Background technique [0002] Since the invention of CPA technology in the 1980s, it has immediately become the main technical way to increase the output peak power of the laser system. Many laser laboratories at home and abroad have carried out related research work one after another. The output peak power of ultra-fast high-power lasers has been developed rapidly, thus It has promoted the continuous deepening of strong field ultrafast scientific research. In the early 1990s, scientists proposed OPCPA technology. Because of its advantages such as wide amplification bandwidth...

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Application Information

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IPC IPC(8): H01S3/098H01S3/108
Inventor 李儒新梁晓燕冷雨欣於亮红许毅陆效明俆至展
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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