Broadband high efficiency grating of total internal reflection etched in fused silica for high power lasers
BO WANG1,*
Affiliation
- 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