Laser detection using liquid crystal polarization modulators


Lasers can be identified by their relatively long coherence lengths using interferometry. A Mach-Zehnder interferometer incorporating liquid crystal polarization modulators is demonstrated as a means of low-cost, robust laser detection. Temporal modulations, as a signature of coherence, can be induced by modulating polarization changes in liquid crystal modulators using low voltages. Sensitivities of <10 nW can be achieved. The suitability as a means of laser detection is discussed.

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Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: Copyright 2020 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Uncontrolled Keywords: interferometry,laser detection,liquid crystal,Atomic and Molecular Physics, and Optics,Engineering(all)
Publication ISSN: 1560-2303
Last Modified: 09 Apr 2024 07:14
Date Deposited: 19 Jun 2020 08:19
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Related URLs: https://www.spi ... 9.6.064106.full (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-06-08
Accepted Date: 2020-06-01
Authors: Benton, David M. (ORCID Profile 0000-0003-0663-1404)



Version: Published Version

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