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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 2 — Jan. 10, 2012
  • pp: 197–208

Properties of a variable-delay polarization modulator

David T. Chuss, Edward J. Wollack, Ross Henry, Howard Hui, Aaron J. Juarez, Megan Krejny, S. Harvey Moseley, and Giles Novak  »View Author Affiliations


Applied Optics, Vol. 51, Issue 2, pp. 197-208 (2012)
http://dx.doi.org/10.1364/AO.51.000197


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Abstract

We investigate the polarization modulation properties of a variable-delay polarization modulator (VPM). The VPM modulates polarization via a variable separation between a polarizing grid and a parallel mirror. We find that in the limit where the wavelength is much larger than the diameter of the metal wires that comprise the grid, the phase delay derived from the geometric separation between the mirror and the grid is sufficient to characterize the device. However, outside of this range, additional parameters describing the polarizing grid geometry must be included to fully characterize the modulator response. In this paper, we report test results of a VPM at wavelengths of 350 μm and 3 mm. Electromagnetic simulations of wire grid polarizers were performed and are summarized using a simple circuit model that incorporates the loss and polarization properties of the device.

OCIS Codes
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(230.4110) Optical devices : Modulators
(350.1270) Other areas of optics : Astronomy and astrophysics
(050.6624) Diffraction and gratings : Subwavelength structures
(240.5440) Optics at surfaces : Polarization-selective devices

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: July 5, 2011
Manuscript Accepted: August 1, 2011
Published: January 10, 2012

Citation
David T. Chuss, Edward J. Wollack, Ross Henry, Howard Hui, Aaron J. Juarez, Megan Krejny, S. Harvey Moseley, and Giles Novak, "Properties of a variable-delay polarization modulator," Appl. Opt. 51, 197-208 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-2-197

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