Spectral beam combining using superimposed reflective volume Bragg grating

Benjian Shen; Guangwei Zheng; Jichun Tan; Yanlan He; Xiujian Li; Yisheng Yang

doi:10.1117/12.883110

25 May 2011 Spectral beam combining using superimposed reflective volume Bragg grating

Benjian Shen, Guangwei Zheng, Jichun Tan, Yanlan He, Xiujian Li, Yisheng Yang

Proceedings Volume 8039, Laser Technology for Defense and Security VII; 803918 (2011) https://doi.org/10.1117/12.883110
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

It is an effective approach to obtain high-power laser output by spectral beam combining (SBC) technologies. The power of the output beam increases with the increasing of the number of wavelength channels. However, that makes the traditional SBC system very huge for achieving high power laser output. In this paper, a simple SBC system based on the superimposed Reflective Volume Bragg Grating (RVBG) is proposed to reduce the scale of the SBC system. Two structure models of the superimposed RVBG - the superimposed RVBG with the same period and the superimposed RVBG with different period are analyzed and compared by using the rigorous coupled wave analysis, and their applications for SBC system are discussed. Numerical results show that the superimposed RVBG are easy to be fabricated and have the potential to combine multiple lasers with one volume. The superimposed RVBG with different period can achieve high diffraction efficiency simultaneously for each grating with small slant angle divergence, and is convenience to combine two beams with small spectral separation.

Citation Download Citation

Benjian Shen, Guangwei Zheng, Jichun Tan, Yanlan He, Xiujian Li, and Yisheng Yang "Spectral beam combining using superimposed reflective volume Bragg grating", Proc. SPIE 8039, Laser Technology for Defense and Security VII, 803918 (25 May 2011); https://doi.org/10.1117/12.883110

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