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Proceedings Paper

Precise design of the pure phase element for quasi-annular beam shaping
Author(s): Yuan Wu; Junzhong Xu; Yiqiong Zhao; Shaojun Fu; Yongping Li
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Paper Abstract

The phase distribution design process of the pure phase element (PPE) used for quasi-annular beam shaping is introduced in this paper. A new optimization algorithm named Quasi-Gradient Descent (Quasi-GD) algorithm has been developed and used here to meet such design requirement. With a more restrictive sampling mode named precise sampling in the optimization, the simulated result shows that the uniformity of energy distribution on the focal plane is invariant with different sampling intervals and the true beam shaping effect is achieved.

Paper Details

Date Published: 5 September 2002
PDF: 8 pages
Proc. SPIE 4914, High-Power Lasers and Applications II, (5 September 2002); doi: 10.1117/12.481754
Show Author Affiliations
Yuan Wu, National Synchrotron Radiation Lab. (China)
Junzhong Xu, Univ. of Science and Technology of China (China)
Yiqiong Zhao, Univ. of Science and Technology of China (China)
Shaojun Fu, Univ. of Science and Technology of China (China)
Yongping Li, Univ. of Science and Technology of China (China)

Published in SPIE Proceedings Vol. 4914:
High-Power Lasers and Applications II
Dianyuan Fan; Keith A. Truesdell; Koji Yasui, Editor(s)

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