High efficiency multiplexed volume Bragg gratings for angle deflection at 1064nm

Wang Hao; Fanyu Kong; Yunxia Jin; Dongbing He; Jingyin Zhao; Jianwei Mo

doi:10.1117/12.2602456

9 August 2021 High efficiency multiplexed volume Bragg gratings for angle deflection at 1064nm

Wang Hao, Fanyu Kong, Yunxia Jin, Dongbing He, Jingyin Zhao, Jianwei Mo

Proceedings Volume 11912, Pacific Rim Laser Damage 2021: Optical Materials for High-Power Lasers; 119120I (2021) https://doi.org/10.1117/12.2602456
Event: Pacific Rim Laser Damage 2021: Optical Materials for High Power Lasers, 2021, Hangzhou, China

Abstract

The volume Bragg grating (VBG) recorded in the photo-thermo-refractive (PTR) glass has high diffraction efficiency (DE), excellent angle selectivity, multiplexed and flexible design, which is an ideal device to achieve the angle magnification of beam scanning. In this study, a 4-channel multiplexed VBGs with the average relative diffraction efficiency (RDE) greater than 96% at 1064 nm and the maximum discrete angle deflection of 12° was designed and fabricated. And the angle deviation of experiments and design schemes were controlled less than 0.3°. The laser damage of PTR glass and multiplexed VBGs were also tested at 1064 nm. Laser damage tests were performed with a beam diameter of 0.3 mm by "1-on-1" mode. It showed that the laser damage threshold of PTR glass and multiplexed VBGs were 44.33J/cm² and 30.15 J/cm² respectively.

Citation Download Citation

Wang Hao, Fanyu Kong, Yunxia Jin, Dongbing He, Jingyin Zhao, and Jianwei Mo "High efficiency multiplexed volume Bragg gratings for angle deflection at 1064nm", Proc. SPIE 11912, Pacific Rim Laser Damage 2021: Optical Materials for High-Power Lasers, 119120I (9 August 2021); https://doi.org/10.1117/12.2602456

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