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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 36 — Dec. 20, 2012
  • pp: 8526–8534

Dynamic polarization grating based on a dye-doped liquid crystal controllable by a single beam in a homeotropic-planar geometry

Hak-Rin Kim, Eunje Jang, Jiyoon Kim, Kyung-Il Joo, and Sin-Doo Lee  »View Author Affiliations

Applied Optics, Vol. 51, Issue 36, pp. 8526-8534 (2012)

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We present a dynamic polarization grating based on a dye-doped liquid crystal cell that is controllable by a single pump beam in a binary homeotropic-planar configuration produced through selective rubbing. Upon single pump beam irradiation, the azo dyes in the liquid-crystal (LC) layer diffuse and adsorb onto the planar LC-anchoring surface due to trans-cis photo-isomerization. It is found that the dynamic polarization grating effect results mainly from the photo-induced easy axis reorientation by the amount of dye molecules adsorbed on the planar LC-alignment surface in a single-beam control scheme. The initial LC-anchoring conditions and the dynamic behavior of the dye adsorption strongly influence the repetitive writing-erasing processes by the single pump beam.

© 2012 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.2770) Diffraction and gratings : Gratings
(160.3710) Materials : Liquid crystals
(230.5440) Optical devices : Polarization-selective devices

ToC Category:
Diffraction and Gratings

Original Manuscript: September 14, 2012
Revised Manuscript: November 21, 2012
Manuscript Accepted: November 21, 2012
Published: December 13, 2012

Hak-Rin Kim, Eunje Jang, Jiyoon Kim, Kyung-Il Joo, and Sin-Doo Lee, "Dynamic polarization grating based on a dye-doped liquid crystal controllable by a single beam in a homeotropic-planar geometry," Appl. Opt. 51, 8526-8534 (2012)

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