This paper proposed a novel metal coated surface relief grating for CO2 laser. Artificial Bee Colony algorithm combined with Rigorous Coupled Wave Analysis is resorted to optimize this grating. A gold coated grating with a reflectivity greater than 99% for TE wave and an extinction ratio higher than 30dB ranges from 9.1 to 10.95um is obtained.
© 2012 OSA
J. Zhao, B. Li, and Y. Wang, "Artificial Bee Colony Optimized High Reflective High Extinction Ratio Wideband Metal Coated Surface Relief Grating for CO2 laser," in International Photonics and Optoelectronics Meetings, OSA Technical Digest (online) (Optical Society of America, 2012), paper MTh4A.11.
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