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Proceedings Paper

Improved uniformity of target irradiation by combining an Orthogonal Cylindrical Lens Array and the polarization control
Author(s): Jianzhou Zheng; Wenyang Zheng; Qingxu Yu; Bin Dong; Shouhua Guan; Yunfeng Wu
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Paper Abstract

A scheme of combining technology of orthogonal cylindrical lens array (OCLA) and polarization control plate (PCP) is introduced to improve target irradiation uniformity in laser fusion. The feasibility of the scheme is also analyzed by detailed two-dimensional simulation. It shows that a focal pattern with flat-top and sharp-edge profile could be obtained with an OCLA, while interference stripes inside the pattern are smoothed out by the use of the polarization control plate (PCP) technique. Moving the target slightly from the exact focal plane of the principal focusing lens can eliminate middle-scale-length intensity fluctuation further. And a well-irradiated laser spot with small nonuniformity and great energy efficiency can be obtained in this scheme.

Paper Details

Date Published: 13 October 2010
PDF: 8 pages
Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 76540O (13 October 2010); doi: 10.1117/12.866696
Show Author Affiliations
Jianzhou Zheng, Dalian Univ. of Technology (China)
Dalian Nationalities Univ. (China)
Wenyang Zheng, Beijing Univ. of Cemecal Technology (China)
Qingxu Yu, Dalian Univ. of Technology (China)
Bin Dong, Dalian Nationalities Univ. (China)
Shouhua Guan, Dalian Univ. of Technology (China)
Dalian Nationalities Univ. (China)
Yunfeng Wu, Dalian Univ. of Technology (China)
Dalian Nationalities Univ. (China)


Published in SPIE Proceedings Vol. 7654:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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