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Multipass amplification system of ultrashort pulse laser

A technology of ultra-short pulse laser and amplification system, which is applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problems of spectral narrowing and other problems, and achieve the effects of small insertion loss, increased amplification line width, and simple structure

Inactive Publication Date: 2013-04-24
SHENZHEN UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a multi-pass amplification system for ultrashort pulse laser, aiming at solving the problem of narrowing the spectrum in the ultrashort pulse amplification process

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  • Multipass amplification system of ultrashort pulse laser
  • Multipass amplification system of ultrashort pulse laser
  • Multipass amplification system of ultrashort pulse laser

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Embodiment Construction

[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0013] Aiming at the problems existing in the prior art, the multi-pass amplification system of the ultrashort pulse laser provided by the present invention uses a gain medium with polarization-dependent gain characteristics to amplify the ultrashort pulse laser to be amplified multiple times, and in the amplification process, utilizes The optical dispersion effect of the optically active medium makes the linear polarization direction of each spectral component different, and the spectral component corresponding to the polarization direction with the largest laser gain is also different each t...

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Abstract

The invention belongs to the technical field of laser amplification, and provides a multipass amplification system of an ultrashort pulse laser. The multipass amplification system of the ultrashort pulse laser comprises gain media with a polarized related gain characteristic, at least two optical rotation medium devices, two mirror lens groups, two lenses or concave surface reflectors, other reflectors and the like. The multipass amplification system of the ultrashort pulse laser uses the gain media with the polarized related gain characteristic to carry out repeated amplification to a to-be-amplified ultrashort pulse laser. In the process of amplification, optical rotation media are used for enabling linear polarization directions of each spectrum component to produce separation, and to-be-amplified ultrashort pulse lasers which are amplified in different times of amplification are enabled to be corresponding to different amplification center spectra. Compared with the prior art, the multipass amplification system of the ultrashort pulse laser is simple in structure, easy to adjust, convenient to use, low in cost, and low in insertion loss.

Description

technical field [0001] The invention belongs to the technical field of laser amplification, and in particular relates to a multi-pass amplification system of ultrashort pulse laser. Background technique [0002] Ultrashort pulse laser generally refers to the time width less than 10 -12 Second laser pulses, which are widely used in the fields of strong field physics, ultrafast imaging, ultraprecision processing and ultrafast optical communication. [0003] In order to obtain ultrashort pulse laser with higher energy, it is necessary to amplify the ultrashort pulse laser. Chirped pulse amplification technology is an effective method to achieve ultrashort pulse laser amplification. It is known that in the chirped pulse amplification process, when the gain medium amplifies the laser pulse, the laser pulse has a higher gain near the center frequency than other frequency regions, and the gain from the center frequency to both ends gradually decreases , when the bandwidth of the ...

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Application Information

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IPC IPC(8): H01S3/106H01S3/00
Inventor 徐世祥邹达曾选科徐平蔡懿陈红艺李景镇
Owner SHENZHEN UNIV
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