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Broadband efficient laser amplification device

A laser amplification and broadband technology, which is applied to lasers, laser parts, phonon exciters, etc., can solve the problems of increasing the aberration of the amplification cavity and affecting the quality of the output spot, and achieves improved contrast, simple structure, and improved amplification. Effect

Active Publication Date: 2015-05-06
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

Its working principle is to use the large size of the slab laser gain medium, so that the signal light is amplified through the gain medium multiple times (see Hua Lin, Jinfeng Li, and Xiaoyan Liang, 105 W, <10 ps, ​​TEM00 laser output based on an in -band pumped Nd: YVO4Innoslab amplifier, Opt.Lett.37, 2634(2012)), however, the design of this unstable cavity increases the aberration of the amplified cavity and affects the quality of the output spot

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention cannot be limited thereby.

[0020] see first figure 2 , figure 2 It is a structural schematic diagram of Embodiment 1 of the broadband high-efficiency amplifying device of the present invention. It can be seen from the figure that the broadband high-efficiency laser amplification device of the present invention includes a stretcher 2 , a first grating 4 , a second grating 5 , a slab gain medium 6 , a laser diode array 7 for pumping, and a right-angle return mirror 8 .

[0021] The direction of the optical path and the relative positions of the above-mentioned components are as follows: the low-power ultrashort pulse laser 1 to be amplified is first stretched by the stretcher 2 to obtain the chirped pulse laser 3, and then diffracted by the upper part of the first grating 4, and the upper part of the secon...

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Abstract

A broadband efficient laser amplification device applicable to short-pulse laser comprises a first grating, a second grating, a batten gain medium, a laser diode array, a right-angle mirror lens and a total reflective mirror and is characterized in that the grating pair or a prism equivalent dispersion device is utilized to conduct space widening on pulse laser, and the pulse laser is amplified through a batten-shaped laser amplification device or an optical parametric amplification device. The broadband efficient laser amplification device can simultaneously conduct widening and amplification on the short-pulse laser in time and space and has the advantages of being good in cooling effect, high in amplification efficiency, wide in gain band, high in contrast ratio and the like.

Description

technical field [0001] The invention relates to a laser amplifying device, in particular to a broadband high-efficiency laser amplifying device suitable for ultrashort pulse laser. Background technique [0002] With the development of ultra-intense and ultra-short laser technology, femtosecond laser amplification technology has already become one of the research hotspots in this field. At present, high-power femtosecond lasers are widely used in research fields such as laser-matter interaction, laser micromachining, and laser medical treatment, providing important technical means for the development of these fields. However, how to improve the quality of the amplified beam has become one of the difficult problems in femtosecond laser amplification technology. [0003] At present, the ultrashort pulse laser amplification devices applicable to picoseconds and even femtoseconds are mainly CPA devices (ie, chirped pulse amplifiers) and OPCPA devices (ie, optical parametric chir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/10H01S3/16
Inventor 邹晓李朝阳李妍妍郭晓杨冷雨欣陆效明许毅李儒新徐至展
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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