Laser detection using liquid crystal polarization modulators

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number064106
JournalOptical Engineering
Volume59
Issue number6
DOIs
Publication statusPublished - 8 Jun 2020

Bibliographical note

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Keywords

  • interferometry
  • laser detection
  • liquid crystal

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