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Dynamic polarization grating based on a dye-doped liquid crystal controllable by a single beam in a homeotropic-planar geometry |
Applied Optics, Vol. 51, Issue 36, pp. 8526-8534 (2012)
http://dx.doi.org/10.1364/AO.51.008526
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Abstract
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
History
Original Manuscript: September 14, 2012
Revised Manuscript: November 21, 2012
Manuscript Accepted: November 21, 2012
Published: December 13, 2012
Citation
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)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-36-8526
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