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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 10 — Oct. 1, 2007
  • pp: 2623–2626

Phase transition induced by two-photon absorption in azobenzene liquid crystals

Thai V. Truong, Chao-Yuan Chen, Nelson V. Tabiryan, and Y. Ron Shen  »View Author Affiliations


JOSA B, Vol. 24, Issue 10, pp. 2623-2626 (2007)
http://dx.doi.org/10.1364/JOSAB.24.002623


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Abstract

We report the observation of nematic-to-isotropic transition induced by two-photon absorption in azobenzene liquid crystals. Optical Kerr effect was used to monitor the transition through the pump–probe scheme, and the pump threshold for the transition showed the expected dependence on pump energy per pulse. Qualitatively different behaviors of the transitions induced one- and two-photon excitations were observed.

© 2007 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(190.0190) Nonlinear optics : Nonlinear optics
(210.4770) Optical data storage : Optical recording
(260.5130) Physical optics : Photochemistry
(290.0290) Scattering : Scattering

ToC Category:
Materials

History
Original Manuscript: March 27, 2007
Revised Manuscript: June 28, 2007
Manuscript Accepted: July 9, 2007
Published: September 18, 2007

Citation
Thai V. Truong, Chao-Yuan Chen, Nelson V. Tabiryan, and Y. Ron Shen, "Phase transition induced by two-photon absorption in azobenzene liquid crystals," J. Opt. Soc. Am. B 24, 2623-2626 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-10-2623

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