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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 15 — Aug. 1, 2009
  • pp: 2252–2254

Excitation-enhanced optical reorientation in nematic liquid crystals

Pei Yang, Liying Liu, Lei Xu, and Y. R. Shen  »View Author Affiliations


Optics Letters, Vol. 34, Issue 15, pp. 2252-2254 (2009)
http://dx.doi.org/10.1364/OL.34.002252


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Abstract

Giant enhancement of optical reorientation in pure nematic liquid crystals (LCs) was observed with a near-resonant input beam. The enhancement observed through reduction of the threshold of the optical Fréedericksz transition in a 28- μ m -thick homeotropic LC cell was almost 700 times in comparison with the case of an off-resonant input beam. Wavelength dependence of the enhancement followed the LC absorption spectrum very well, confirming that the enhancement arose from the excitation of LC molecules.

© 2009 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(190.4400) Nonlinear optics : Nonlinear optics, materials

ToC Category:
Nonlinear Optics

History
Original Manuscript: April 1, 2009
Revised Manuscript: June 23, 2009
Manuscript Accepted: June 29, 2009
Published: July 17, 2009

Citation
Pei Yang, Liying Liu, Lei Xu, and Y. R. Shen, "Excitation-enhanced optical reorientation in nematic liquid crystals," Opt. Lett. 34, 2252-2254 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-15-2252


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