Experimental realization of a high-contrast grating based broadband quarter-wave plate

Date
2012-12-03
Advisor
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Co-Advisor
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Source Title
Optics Express
Print ISSN
1094-4087
Electronic ISSN
Publisher
Optical Society of America
Volume
20
Issue
25
Pages
27966 - 27973
Language
English
Type
Article
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Abstract

Fabrication and experimental characterization of a broadband quarter-wave plate, which is based on two-dimensional and binary silicon high-contrast gratings, are reported. The quarter-wave plate feature is achieved by the utilization of a regime, in which the proposed grating structure exhibits nearly total and approximately equal transmission of transverse electric and transverse magnetic waves with a phase difference of approximately pi/2. The numerical and experimental results suggest a percent bandwidth of 42% and 33%, respectively, if the operation regime is defined as the range for which the conversion efficiency is higher than 0.9. A compact circular polarizer can be implemented by combining the grating with a linear polarizer. (C) 2012 Optical Society of America

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Keywords
Polarizer, Reflectors, Fabrication, Laser
Citation
Published Version (Please cite this version)