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

15 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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10.1364/AO.48.002731

Cite this

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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

Abstract

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