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Proceedings Paper

Design of beam sampling grating and study on its diffraction action
Author(s): Quan Liu; Jianhong Wu; Chaoming Li
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Paper Abstract

The beam sampling grating (BSG) is one of the important diffractive optical elements used in the final target system of the inertial confinement fusion (ICF). The BSG is designed in this paper. By use of optical holographic theory, achromatic optical system on recording holographic BSG mask is designed. Its aberration is analyzed by using optical design software. Meantime, the diffraction efficiency of the BSG is discussed by using rigorous coupled-wave theory. Maintaining spatial uniformity of the diffraction efficiency across the grating aperture (320mm×320mm) is the most challenging processing requirement. The results shows: there are duty cycle and groove depth in grating parameter, the groove depth is more important to spatial uniformity of diffraction efficiency. Some useful information for practical fabrication of the BSG is given also. A prototype beam sampling grating will be fabricated in late 2005.

Paper Details

Date Published: 20 January 2006
PDF: 6 pages
Proc. SPIE 6027, ICO20: Optical Information Processing, 60273C (20 January 2006); doi: 10.1117/12.668327
Show Author Affiliations
Quan Liu, Soochow Univ. (China)
Jianhong Wu, Soochow Univ. (China)
Chaoming Li, Soochow Univ. (China)

Published in SPIE Proceedings Vol. 6027:
ICO20: Optical Information Processing
Yunlong Sheng; Songlin Zhuang; Yimo Zhang, Editor(s)

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