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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 14 — May. 10, 2009
  • pp: 2731–2734

Nonlinear optical transmission of lead phthalocyanine-doped nematic liquid crystal composites for multiscale nonlinear switching from nanosecond to continuous wave

ChuanXiang Sheng, Robert A. Norwood, Jiafu Wang, Jayan Thomas, Diane Steeves, Brian Kimball, and N. Peyghambarian  »View Author Affiliations


Applied Optics, Vol. 48, Issue 14, pp. 2731-2734 (2009)
http://dx.doi.org/10.1364/AO.48.002731


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Abstract

We have formulated composites of lead (II) tetrakis (4-cumylphenoxy) phthalocyanine (PbTCPc) doped into nematic liquid crystal (LC), 4 -pentyl-4-biphenylcarbonitrile (5-CB), that has received a 90 ° twisted alignment and investigated the nonlinear transmission properties using both pulsed (Nd:YLF 524 nm , 5 ns ) and cw ( 532 nm ) lasers. In the nanosecond regime, this compound is a reverse saturable absorber performing similarly to low-concentration solutions of PbTCPc. Under cw conditions, we observe optically self-activated polarization switching with low threshold input energy. Our results suggest the potential for an all-optical switch working from the nanosecond time scale to cw.

© 2009 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(190.5940) Nonlinear optics : Self-action effects

ToC Category:
Materials

History
Original Manuscript: February 24, 2009
Manuscript Accepted: March 16, 2009
Published: May 6, 2009

Citation
ChuanXiang Sheng, Robert A. Norwood, Jiafu Wang, Jayan Thomas, Diane Steeves, Brian Kimball, and N. Peyghambarian, "Nonlinear optical transmission of lead phthalocyanine-doped nematic liquid crystal composites for multiscale nonlinear switching from nanosecond to continuous wave," Appl. Opt. 48, 2731-2734 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-14-2731


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