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Broadband high efficiency grating of total internal reflection etched in fused silica for high power lasers

BO WANG1,*

Affiliation

  1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China

Abstract

D iffraction properties o f t otal internal reflection (TIR) grating etched in fused silica under second Bragg angle incidence are investigated The grating profile parameters are optimized using the rigorous coupled wave analysis (RCWA) With the optimized results diffraction effi ciencies of 99.68% and 99.87% can be obtained for TE and TM polarization s in the reflected 2nd order, respectively The presented grating s under second Bragg angle incidence have advantages of high efficiency of TIR high damage threshold of fused silica and important broadband property for operation, which should be useful elements for numerous optical applications, especially for high power laser syst ems..

Keywords

Rigorous coupled-wave analysis, Total internal reflection, Second Bragg angle.

Citation

BO WANG, Broadband high efficiency grating of total internal reflection etched in fused silica for high power lasers, Optoelectronics and Advanced Materials - Rapid Communications, 6, 7-8, July-August 2012, pp.693-696 (2012).

Submitted at: May 3, 2012

Accepted at: July 19, 2012