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Proceedings Paper

Spectral beam combining using superimposed reflective volume Bragg grating
Author(s): Benjian Shen; Guangwei Zheng; Jichun Tan; Yanlan He; Xiujian Li; Yisheng Yang
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Paper 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.

Paper Details

Date Published: 26 May 2011
PDF: 9 pages
Proc. SPIE 8039, Laser Technology for Defense and Security VII, 803918 (26 May 2011); doi: 10.1117/12.883110
Show Author Affiliations
Benjian Shen, National Univ. of Defense Technology (China)
Guangwei Zheng, National Univ. of Defense Technology (China)
Jichun Tan, National Univ. of Defense Technology (China)
Yanlan He, National Univ. of Defense Technology (China)
Xiujian Li, National Univ. of Defense Technology (China)
Yisheng Yang, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 8039:
Laser Technology for Defense and Security VII
Mark Dubinskii; Stephen G. Post, Editor(s)

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