Wideband femtosecond polarizing beam splitter grating with orthogonally diffractive directions

被引：0

作者：

Wang, Bo ^{[1
]}

Li, Yongchan ^{[2
]}

机构：

[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China

[2] Guangdong Peizheng Coll, English Educ Ctr, Guangzhou 510830, Guangdong, Peoples R China

来源：

JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS | 2011年 / 13卷 / 5-6期

关键词：

diffractive optics; modal method; rigorous coupled-wave analysis; polarizing beam splitter; RECTANGULAR TRANSMISSION GRATINGS; BINARY GRATINGS; DEEP;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We describe gratings etched in fused silica for splitting femtosecond polarized beams, where TE- and TM-polarized waves are diffracted in two orthogonal directions. Grating duty cycle and depth are directly optimized with two-wave interference of the excited modes. Efficiencies are calculated using rigorous coupled-wave analysis, which coincides well with predictions of the modal method. Optimized polarizing beam splitter grating shows wide wavelength range and angular bandwidth from diffraction properties. For high optical quality of fused silica, the presented PBS grating with orthogonally diffractive directions should be useful in femtosecond laser high power systems.

引用

页码：609 / 612

页数：4

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