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Proceedings Paper

Beam sampler for third harmonic diagnostics in ICF system
Author(s): Jinyu Wang; Yingbai Yan; Lin Pang; Qiaofeng Tan; Guofan Jin
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Paper Abstract

The design of the Shenguang system calls for a beam sampler to provide 3rd harmonic laser energy for diagnostics in the highly constrained area of the target chamber, The beam sampler should diffract 0.01%-0.5% of the 3rd harmonic light into a calorimeter at a small angle to estimate its corresponding energy. In order to achieve low efficiency beam sampling with the least energy lost, two kinds of surface-relief grating have been designed with different method. One is the rectangular phase grating with its step height and width optimized. Another one is the sinusoidal phase grating. For each kind of beam sampler, the permissible fabrication errors have been analyzed. The characteristics of them have been compared in detail.

Paper Details

Date Published: 25 October 2000
PDF: 8 pages
Proc. SPIE 4095, Laser Beam Shaping, (25 October 2000); doi: 10.1117/12.405262
Show Author Affiliations
Jinyu Wang, Tsinghua Univ. (China)
Yingbai Yan, Tsinghua Univ. (China)
Lin Pang, Tsinghua Univ. (China)
Qiaofeng Tan, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4095:
Laser Beam Shaping
Fred M. Dickey; Scott C. Holswade, Editor(s)

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