Chirped Pulse Stretching, Compression and Amplification System with Elimination of Higher Order Dispersion

A chirped pulse and amplification system technology, applied in the field of laser science, to achieve the effects of flat pulse phase spectrum, increased output peak power, and enhanced contrast

Active Publication Date: 2018-10-02
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

In practice, the residual dispersion of a high-energy ultra-intense ultra-short laser system usually exceeds 10 5 fs 4 , wide spectrum output pulse can only support 30fs output

Method used

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  • Chirped Pulse Stretching, Compression and Amplification System with Elimination of Higher Order Dispersion
  • Chirped Pulse Stretching, Compression and Amplification System with Elimination of Higher Order Dispersion
  • Chirped Pulse Stretching, Compression and Amplification System with Elimination of Higher Order Dispersion

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Embodiment Construction

[0027] image 3 As shown, it is a schematic structural diagram of a specific embodiment of the chirped pulse stretching, compression and amplification system for eliminating high-order dispersion according to the present invention. As can be seen from the figure, the chirped pulse stretching, compression and amplification system for eliminating high-order dispersion of the present invention includes a femtosecond pulse oscillation source 5, an auxiliary stretcher 6, a preamplifier 7, an auxiliary compressor 8, a first mirror 9, and a main grating stretching. 10 , a second mirror 11 , a main amplifier 12 , and a main grating compressor 13 .

[0028]The optical pulse output by the femtosecond pulse oscillation source 5 has the characteristics of extremely narrow pulse width and wide spectral width. In the present invention, the femtosecond pulse oscillation source 5 is used as a seed source, which can be a mode-locked pulse laser such as a Ti:sapphire femtosecond mode-locked pul...

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Abstract

The invention discloses a chirped pulse stretching compression amplification system for eliminating high-order dispersion. The chirped pulse stretching compression amplification system comprises a femtosecond pulse oscillation source, a main grating stretcher, a main amplifier and a main grating compressor, and is characterized by also comprising an auxiliary stretcher, an auxiliary compressor, a pre-amplifier, a first reflecting mirror and a second reflecting mirror. According to the chirped pulse stretching compression amplification system, pulse stretching compression is separated from system material dispersion compensation, so that the remaining high-order dispersion of a light pulse which is finally output is reduced by a couple of orders of magnitude or is even eliminated completely and possibly. A phase spectrum outputting a laser pulse is flat, pulse width approaching a conversion limit can be obtained, amplification of an ultra-strong and ultra-short pulse with the width of less than 15fs is supported, and a contrast at a picosecond position before a laser main pulse is output is improved.

Description

technical field [0001] The invention relates to the field of laser science, in particular to a chirped pulse time-domain broadening, compressing and amplifying system for eliminating high-order dispersion. Background technique [0002] Ultra-intense and ultra-short laser science takes the development of ultra-intense and ultra-short lasers, the interaction between ultra-intense and ultra-short lasers and matter, as well as cutting-edge basic research in interdisciplinary and related high-tech fields as research objects, and is an important frontier field of science. . Among them, the miniaturized ultra-short ultra-intensity laser system that can output high-power pulses is the basic equipment for the research in the field of ultra-intensive ultra-short laser science. The "super-intense and ultra-short" here means that the time width of the laser pulse is extremely narrow (generally less than 200 femtoseconds, and femtoseconds is 10 - 15 s, or fs for short), the peak power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/105H01S3/10
Inventor 王乘冷雨欣许毅陆效明刘彥祺韩冬佳李儒新徐至展
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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