Open AccessA broad-angle polarization beam splitter based on a simple dielectric periodic structure
Author(s) -
Yuan Zhang,
Yurong Jiang,
Wei Xue,
Sailing He
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.014363
Subject(s) - optics , polarization (electrochemistry) , beam splitter , transverse plane , dielectric , materials science , radial polarization , brewster's angle , polarization rotator , physics , birefringence , optoelectronics , laser beam quality , laser beams , laser , chemistry , structural engineering , brewster , engineering
We propose a novel broad-angle polarization beam splitter utilizing the spatial dispersion of a special multi-layered dielectric periodic structure. The equal-frequency contours of this structure are flat lines for TE polarization but curved lines for TM polarization at a designed frequency. This special multi-layered structure has a fixed optical thickness for TE polarization for all incident angles. A polarization beam splitter working over a broad range of angle (from 0 degrees to 70 degrees ) is achieved by stacking two such multi-layered structures of finite length (in the normal direction) with a half-period shift in the transverse direction.