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Volume Bragg grating high-energy pisosecond laser

A volume Bragg grating, high-energy technology, applied in the laser field, can solve the problems of large volume, low stability, complex devices, etc., and achieve the effect of avoiding too small spot and solving large volume.

Active Publication Date: 2016-07-27
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is a volume Bragg grating high-energy picosecond laser to solve the problems of large volume, complex devices and low stability of lasers that obtain high-energy picosecond pulses at the present stage

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  • Volume Bragg grating high-energy pisosecond laser
  • Volume Bragg grating high-energy pisosecond laser

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Embodiment Construction

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] Aiming at the problems of large volume, complex devices and low stability of lasers for obtaining high-energy picosecond pulses at the present stage, the present invention proposes a volume Bragg grating high-energy picosecond laser. like figure 1 , figure 2 , image 3 As shown, it specifically includes:

[0019] In the box, two p...

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Abstract

The invention relates to the technical field of laser, in particular to a volume Bragg grating (VBG) high-energy pisosecond laser. The laser disclosed by the invention comprises a box, wherein two parallel VBG end mirrors are separately arranged at the two ends of the interior of the box to form an optical resonant cavity, an electro-optical switch, a polarizing film, a saturable absorber, a gain pumping module and a concave lens are sequentially arranged in the optical resonant cavity, the gain pumping module is used for strong pumping on a laser crystal to generate oscillation light, the oscillation light is gradually compressed to a short pulse under the effect of the saturable absorber, and meanwhile, the pulse with is further compressed under the effect of the VBG end mirrors. At the maximum pulse energy moment, high voltage is applied to the electro-optical switch, high-energy pisosecond pulse is output through the polarizing film and a full-reflection mirror by a cavity dumping technology to obtain high-energy pisosecond pulse laser, and thus, the problems of large size, device complexity and low stability of the high-energy pisosecond laser at the current stage are solved.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a volume Bragg grating high-energy picosecond laser. Background technique [0002] Picosecond lasers are more and more widely used in industrial processing, surface modification, satellite ranging, life science and other fields. The various metabolic times of living organisms are about 10 -12 s, the use of picosecond pulsed light can affect the metabolism of this time period. Therefore, in various researches in life sciences, picosecond lasers have been widely used. Its research on mammalian cell DAN has greatly promoted the development of human awareness of yourself. The picosecond laser pulse is narrow, the light intensity is high, the distance measurement accuracy is high, and the measurement distance is long. In satellite ranging, its accuracy can reach 3mm. During picosecond processing, it generates less heat, has high processing precision, has no selectivity for materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/08H01S3/115
CPCH01S3/08H01S3/115
Inventor 李港龙明亮陈檬
Owner BEIJING UNIV OF TECH
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