Beam sampler for third harmonic diagnostics in ICF system

Jinyu Wang; Yingbai Yan; Lin Pang; Qiaofeng Tan; Guofan Jin

doi:10.1117/12.405262

25 October 2000 Beam sampler for third harmonic diagnostics in ICF system

Jinyu Wang, Yingbai Yan, Lin Pang, Qiaofeng Tan, Guofan Jin

Proceedings Volume 4095, Laser Beam Shaping; (2000) https://doi.org/10.1117/12.405262
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

The design of the Shenguang system calls for a beam sampler to provide 3^rd 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 3^rd 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.

Citation Download Citation

Jinyu Wang, Yingbai Yan, Lin Pang, Qiaofeng Tan, and Guofan Jin "Beam sampler for third harmonic diagnostics in ICF system", Proc. SPIE 4095, Laser Beam Shaping, (25 October 2000); https://doi.org/10.1117/12.405262

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