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

Chuan Xiang Sheng; Robert A. Norwood; Jiafu Wang; Jayan Thomas; Diane Steeves; Brian Kimball; N. Peyghambarian

doi:10.1364/AO.48.002731

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

Chuan Xiang Sheng, Robert A. Norwood, Jiafu Wang, Jayan Thomas, Diane Steeves, Brian Kimball, N. Peyghambarian

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

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.

Original language	English (US)
Pages (from-to)	2731-2734
Number of pages	4
Journal	Applied optics
Volume	48
Issue number	14
DOIs	https://doi.org/10.1364/AO.48.002731
State	Published - May 10 2009

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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title = "Nonlinear optical transmission of lead phthalocyanine- Doped nematic liquid crystal composites for multiscale nonlinear switching from nanosecond to continuous wave",

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.",

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AU - Sheng, Chuan Xiang

AU - Norwood, Robert A.

AU - Wang, Jiafu

AU - Thomas, Jayan

AU - Steeves, Diane

AU - Kimball, Brian

AU - Peyghambarian, N.

PY - 2009/5/10

Y1 - 2009/5/10

N2 - 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.

AB - 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.

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

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