Method for debugging compressor of ultra-short pulse laser system

A technology of ultra-short pulse laser and debugging method, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems of narrow test range, complex initial installation accuracy, etc., and achieve the effect of short laser pulse width

Inactive Publication Date: 2015-11-18
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

Because this method involves a nonlinear process (frequency doubling process), it requires a large energy of light to generate a signal, and usually needs to amplify the light of the oscillator. In addition, the test range of the general SPIDER and FROG instruments is relatively narrow, and it is necessary to use complex method to control the broadening with high precision, the accuracy of the initial installation of the compressor or the pre-tuning of the compressor

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  • Method for debugging compressor of ultra-short pulse laser system
  • Method for debugging compressor of ultra-short pulse laser system
  • Method for debugging compressor of ultra-short pulse laser system

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing.

[0016] figure 1 It is a schematic diagram of the optical path arrangement of the present invention. The oscillator outputs an ultrashort pulse laser with a repetition rate of tens of megahertz, which is stretched in the time domain by a stretcher, and then amplified in the amplifier to extract enough energy. Finally, the The pulse width is narrowed by a compressor to obtain extremely high pulse peak power.

[0017] The core of the present invention is to directly use part of the light output by the oscillator as the reference light (derived from the half mirror BS2 that can move in and out of the optical path), and introduce the reference light and the main laser through the whole system into the same spectrometer to generate interference pattern, the bright and dark fringes in this interference pattern are integrated isophase lines in the spectral domain and spatial domai...

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Abstract

The invention provides a method for debugging a compressor of an ultra-short pulse laser system. The method comprises the following steps of: exporting a part of laser output by an oscillator as reference light by using a half mirror; guiding the reference light and main laser passing a whole system to the same spectrograph to generate an interference pattern, wherein bright fringes and dark fringes in the interference pattern are spectral domain and spatial domain comprehensive equiphase lines; determining rest second-order and third-order chromatic dispersion in a visualized manner by using the shapes of the equiphase lines; adjusting the grating distance and rotating angle of a parallel grating pair of the compressor in order to flatten and widen the equiphase lines and obtain ultra-short pulse laser output. The method may debug the compressor of the large ultra-short pulse laser system in a visualized and simple manner.

Description

technical field [0001] The invention relates to a compressor debugging method for an ultrashort pulse laser system, in particular to a compressor debugging method for an ultrashort pulse laser system based on spectral domain and space domain integrated equiphase lines. Background technique [0002] At present, the main technical way to obtain high-energy, ultra-short, and ultra-intense pulse laser is chirped pulse amplification technology. The widened laser pulse is amplified in the amplifier to extract enough energy, and finally the pulse width is compressed by the compressor. Narrowing, so as to obtain extremely high pulse peak power. In a common high-energy ultrashort pulse laser system, the stretcher will stretch the pulse to the original 10 3 ~10 5 times, the pulse width is wide enough so that the peak power of the pulse during the amplification process is not too high, which can effectively increase the energy of the pulse without damaging the optical components, an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10
Inventor 左言磊曾小明王逍蒋东镔周凯南吴朝晖郭仪周松谢娜王晓东黄小军母杰孙立黄征李庆
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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