Interferometer setup for the observation of polarization structure near the unfolding point of an optical vortex beam in a birefringent crystal

Interferometer setup for the observation of polarization structure near the unfolding point of an optical vortex beam in a birefringent crystal

We propose a novel birefringent interferometer setup for the study of unfolding points, and obtain for the first time to our knowledge the spatial polarization structure very near the unfolding point of a uniformly polarized optical vortex beam propagating in a birefringent crystal. The unfolding po...

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Bibliographic Details
Published in:Optics express Vol. 20; no. 12; pp. 13573 - 13581
Main Authors: Brundavanam, Maruthi M, Miyamoto, Yoko, Singh, Rakesh Kumar, Naik, Dinesh N, Takeda, Mitsuo, Nakagawa, Ken'ichi
Format: Journal Article
Language:English
Published: United States 04-06-2012
Online Access:Get full text
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Summary:We propose a novel birefringent interferometer setup for the study of unfolding points, and obtain for the first time to our knowledge the spatial polarization structure very near the unfolding point of a uniformly polarized optical vortex beam propagating in a birefringent crystal. The unfolding point is reconstructed by folding back the two separated eigen-beams at the output of the birefringent crystal into a single beam using another identical birefringent crystal, resulting in a birefringent interferometer of Mach-Zehnder type. We also demonstrate that the separation near the unfolding point can be varied by a small rotation of the second crystal.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.20.013573