Interferometric polarimetry using full-Poincaré beams

Ashan Ariyawansa Galabada Dewage; Thomas Brown

doi:10.1117/12.2582371

5 March 2021 Interferometric polarimetry using full-Poincaré beams

Ashan Ariyawansa Galabada Dewage, Thomas Brown

Proceedings Volume 11701, Complex Light and Optical Forces XV; 117010N (2021) https://doi.org/10.1117/12.2582371
Event: SPIE OPTO, 2021, Online Only

Abstract

A full-Poincare beam is an optical beam that contains every polarization state on the Poincare sphere over its cross-section. We present an interferometric method to measure the polarization state of a test beam by interfering it with a full-Poincare beam and analyzing it in the Fourier domain. This results in a Fourier peak whose shape and phase structure changes with the test polarization; with proper calibration, we are able to recover the test beam polarization. A Stress-Engineered Optic (SEO) is used to generate the full-Poincare beam. SEOs, when used at the pupil of an imaging system, have been used to create polarization-dependent PSFs. In this work, we are interferometrically creating a similar PSF in the Fourier domain while retaining the phase information. The effect of having a low photon number in the test beam is also investigated.

Conference Presentation

Citation Download Citation

Ashan Ariyawansa Galabada Dewage and Thomas Brown "Interferometric polarimetry using full-Poincaré beams", Proc. SPIE 11701, Complex Light and Optical Forces XV, 117010N (5 March 2021); https://doi.org/10.1117/12.2582371

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