Far-field detection system for laser beam and crystal alignment

Jiachen Zhang; Daizhong Liu; Baoqiang Zhu; Shunxing Tang; Yanqi Gao

doi:10.1117/1.OE.55.3.036108

14 March 2016 Far-field detection system for laser beam and crystal alignment

Jiachen Zhang, Daizhong Liu, Baoqiang Zhu, Shunxing Tang, Yanqi Gao

Author Affiliations +

Optical Engineering, Vol. 55, Issue 3, 036108 (March 2016). https://doi.org/10.1117/1.OE.55.3.036108

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 μ rad, and average frequency-tripling conversion efficiency is 69.3%, which meet the alignment system requirements on the beam direction and crystals.

Citation Download Citation

Jiachen Zhang, Daizhong Liu, Baoqiang Zhu, Shunxing Tang, and Yanqi Gao "Far-field detection system for laser beam and crystal alignment," Optical Engineering 55(3), 036108 (14 March 2016). https://doi.org/10.1117/1.OE.55.3.036108

Published: 14 March 2016

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