9 July 2013 Broadband and high-efficiency metal-multilayer dielectric grating centered at 800 nm based on non-quarter wave coatings as reflective mirror
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Proceedings Volume 8786, Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers; 878627 (2013) https://doi.org/10.1117/12.2020518
Event: SPIE/SIOM Pacific Rim Laser Damage: Optical Materials for High-Power Lasers, 2013, Shanghai, China
Abstract
This article deals with designing broadband and high efficiency metal multi-layer dielectric grating (MMDG) used to compress and stretch ultra-short laser pulse. The diffraction characteristics of MMDG are analyzed with the method of rigorous coupled-wave analysis (RCWA). Taking the diffraction efficiency of the -1 order as the value of merit function, the parameters such as groove depth, residual thickness, duty cycle are optimized to obtain broadband and high diffraction efficiency. The optimized MMDG shows an ultra-broadband working spectrum with the average efficiency exceeding 97% over 135nm wavelength centered at 800nm and TE polarization. The optimized MMDG should be useful for chirped pulse amplification.
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Shuhua Wang, Weijin Kong, Maojin Yun, Wenfei Zhang, Chenglong You, Zhao Wang, Guoqing Pan, Mengmeng Zhang, Xiaohong Li, Xin Sun, "Broadband and high-efficiency metal-multilayer dielectric grating centered at 800 nm based on non-quarter wave coatings as reflective mirror", Proc. SPIE 8786, Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers, 878627 (9 July 2013); doi: 10.1117/12.2020518; https://doi.org/10.1117/12.2020518
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