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Appl Opt. 2001 Nov 10;40(32):5898-905.

Design of a Binary Grating with Subwavelength Features that Acts as a Polarizing Beam Splitter.

Abstract

A binary diffractive optical element, acting as a polarizing beam splitter, is proposed and analyzed. It behaves like a transmissive blazed grating, working on the first or the second diffraction order, depending on the polarization state of the incident radiation. The grating-phase profile required for both polarization states is obtained by means of suitably sized subwavelength groups etched in an isotropic dielectric medium. A rigorous electromagnetic analysis of the grating is presented, and numerical results concerning its performances in terms of diffraction efficiency as well as frequency and angular bandwidths are provided.

PMID:
18364883
[PubMed]
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