Lasers, Fiber Optics, and Communications

Far-field detection system for laser beam and crystal alignment

[+] Author Affiliations
Jiachen Zhang

University of Chinese Academy of Sciences, No.19 Yuquan Road, Shijingshan District, Beijing 100049, China

Chinese Academy of Sciences, Shanghai Institute of Optics and Fine Mechanics, Key Laboratory of High Power Laser and Physics, No. 390, Qing he Road, Shanghai 201800, China

Daizhong Liu, Baoqiang Zhu, Shunxing Tang

Chinese Academy of Sciences, Shanghai Institute of Optics and Fine Mechanics, Key Laboratory of High Power Laser and Physics, No. 390, Qing he Road, Shanghai 201800, China

Yanqi Gao

China Academy of Engineering Physics, Shanghai Institute of Laser Plasma, No. 390, Qing he Road, Shanghai 201800, China

Opt. Eng. 55(3), 036108 (Mar 14, 2016). doi:10.1117/1.OE.55.3.036108
History: Received December 18, 2015; Accepted February 19, 2016
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Abstract.  Laser beam far-field alignment as well as frequency-doubling and frequency-tripling crystal adjustment is very important for high-power laser facility. Separate systems for beam and crystal alignment are generally used while the proposed approach by off-axial grating sampling share common optics for these two functions, reducing both space and cost requirements. This detection system has been demonstrated on the National Laser Facility of Israel. The experimental results indicate that the average far-field alignment error is <5% of the spatial filter pinhole diameter, average autocollimation angle error of crystals is <10  μrad, and average frequency-tripling conversion efficiency is 69.3%, which meet the alignment system requirements on the beam direction and crystals.

Figures in this Article
© 2016 Society of Photo-Optical Instrumentation Engineers

Topics

Crystals ; Lasers

Citation

Jiachen Zhang ; Daizhong Liu ; Baoqiang Zhu ; Shunxing Tang and Yanqi Gao
"Far-field detection system for laser beam and crystal alignment", Opt. Eng. 55(3), 036108 (Mar 14, 2016). ; http://dx.doi.org/10.1117/1.OE.55.3.036108


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