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Nonlinear Optical Transmission of Lead Phthalocyanine-Doped Nematic Liquid Crystal Composites for Multiscale Nonlinear Switching From Nanosecond to Continuous Wave

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, N Peyghambarian

Appl Opt. 2009 May 10;48(14):2731-4.

PMID: 19424396

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 degree 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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP91083544	Lead(II) tetrakis(4-cumylphenoxy)phthalocyanine		91083-54-4	Price

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