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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 12 — Jun. 4, 2012
  • pp: 13573–13581

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

Maruthi M. Brundavanam, Yoko Miyamoto, Rakesh Kumar Singh, Dinesh N. Naik, Mitsuo Takeda, and Ken’ichi Nakagawa  »View Author Affiliations


Optics Express, Vol. 20, Issue 12, pp. 13573-13581 (2012)
http://dx.doi.org/10.1364/OE.20.013573


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Abstract

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.

© 2012 OSA

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(230.5440) Optical devices : Polarization-selective devices
(260.1180) Physical optics : Crystal optics
(260.1440) Physical optics : Birefringence
(260.5430) Physical optics : Polarization
(050.4865) Diffraction and gratings : Optical vortices
(260.6042) Physical optics : Singular optics

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: April 2, 2012
Revised Manuscript: May 19, 2012
Manuscript Accepted: May 24, 2012
Published: June 1, 2012

Citation
Maruthi M. Brundavanam, Yoko Miyamoto, Rakesh Kumar Singh, Dinesh N. Naik, Mitsuo Takeda, and Ken’ichi Nakagawa, "Interferometer setup for the observation of polarization structure near the unfolding point of an optical vortex beam in a birefringent crystal," Opt. Express 20, 13573-13581 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-12-13573


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