Abstract
This paper proposed a novel metal coated surface relief grating for CO2 laser. Artificial Bee Colony (ABC) algorithm combined with Rigorous Coupled Wave Analysis (RCWA) is resorted to optimize the metal coated surface relief grating. A gold coated grating with a reflectivity greater than 99% for TE wave and an extinction ratio higher than 30dB ranging from 9.1 to 10.95um is obtained. Such high performance grating is anticipated to be used in CO2 laser devices such as polarizer, polarizer beam splitter, isolator, or resonator mirror for special polarized beam generation.
© 2012 Optical Society of America
PDF ArticleMore Like This
Youqing Wang
MF3A.1 Laser and Tera-Hertz Science and Technology (LTST) 2012
Hongchao Cao, Changhe Zhou, Jijun Feng, and Peng Lv
TUP10_4 Conference on Lasers and Electro-Optics/Pacific Rim (CLEO/PR) 2009
Zhang Fang and Hong Wei
ITh4A.05 Information Optoelectronics, Nanofabrication and Testing (IONT) 2012