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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 20 — Jul. 10, 2012
  • pp: 4852–4857

Efficient and monolithic polarization conversion system based on a polarization grating

Jihwan Kim, Ravi K. Komanduri, Kristopher F. Lawler, D. Jason Kekas, and Michael J. Escuti  »View Author Affiliations


Applied Optics, Vol. 51, Issue 20, pp. 4852-4857 (2012)
http://dx.doi.org/10.1364/AO.51.004852


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Abstract

We introduce a new polarization conversion system (PCS) based on a liquid-crystal polarization grating (PG) and louvered wave plate. A simple arrangement of these elements laminated between two microlens arrays results in a compact and monolithic element, with the ability to nearly completely convert unpolarized input into linearly polarized output across most of the visible bandwidth. In our first prototypes, this PG-PCS approach manifests nearly 90% conversion efficiency of unpolarized to polarized for ±11° input light divergence, leading to an energy efficient picoprojector that presents high efficacy (12lm/W) with good color uniformity.

© 2012 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(120.2040) Instrumentation, measurement, and metrology : Displays
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(230.3720) Optical devices : Liquid-crystal devices
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization

ToC Category:
Physical Optics

History
Original Manuscript: April 16, 2012
Revised Manuscript: May 26, 2012
Manuscript Accepted: May 30, 2012
Published: July 9, 2012

Citation
Jihwan Kim, Ravi K. Komanduri, Kristopher F. Lawler, D. Jason Kekas, and Michael J. Escuti, "Efficient and monolithic polarization conversion system based on a polarization grating," Appl. Opt. 51, 4852-4857 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-20-4852

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