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Proceedings Paper

Design of high efficiency, broad bandwidth unpolarized transmission grating for femtosecond laser
Author(s): Xin Rong Chen; Chao Ming Li; Jian Hong Wu
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Paper Abstract

An unpolarized fused silica transmission grating with 1250lp/mm applying in femtosecond laser has been designed at 780nm center wavelength with 740nm~840nm bandwidth. By using the rigorous coupled-wave theory, computer optimization shows that: when the groove depth and duty cycle are about 1.51um~1.63um, 0.53~0.63 respectively, the first-order diffraction efficiency of a lossless-transmission surface-relief grating with a rectangular surface profile can reach to higher than 90% for total unpolarized wave under 28.2°±4°incident angle.

Paper Details

Date Published: 9 November 2016
PDF: 4 pages
Proc. SPIE 10016, High-Power Lasers and Applications VIII, 100161K (9 November 2016); doi: 10.1117/12.2245821
Show Author Affiliations
Xin Rong Chen, Soochow Univ. (China)
Chao Ming Li, Soochow Univ. (China)
Jian Hong Wu, Soochow Univ. (China)

Published in SPIE Proceedings Vol. 10016:
High-Power Lasers and Applications VIII
Ruxin Li; Upendra N. Singh; Robert F. Walter, Editor(s)

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