NDLI: Anisotropy in Third-Order Nonlinear Optical Susceptibility of a Squarylium Dye in a Nematic Liquid Crystal

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Anisotropy in Third-Order Nonlinear Optical Susceptibility of a Squarylium Dye in a Nematic Liquid Crystal

Content Provider	Scilit
Author	Zhao-Hui, Jin Zhong-Yu, Li Kazuo, Kasatani Hiroaki, Okamoto
Copyright Year	2006
Description	Journal: Chinese Physics Letters A squarylium dye is dissolved in 4-cyano-4'-pentylbiphenyl (5CB) and oriented by sandwiching mixtures between two pieces of rubbed glass plates. The optical absorption spectra of the oriented squarylium dye-5CB layers exhibit high anisotropy. The third-order nonlinear optical responses and susceptibilities χ^{(3)}$_{e}$ of squarylium dye in 5CB are measured with light polarizations parallel and perpendicular to the orientational direction by the resonant femtosecond degenerate four-wave mixing (DFWM) technique. Temporal profiles of the DFWM signal of the oriented squarylium dye-5CB layers with light polarizations parallel and perpendicular to the orientational direction are measured with a time resolution of 0.3 ps (FWHM), and are found to consist of two components, i.e., the coherent instantaneous nonlinear response and slow response due to the formation of excited molecules. A high anisotropic ratio of χ^{(3)}$_{e}$, 10.8±1.2, is observed for the oriented layers.
Related Links	http://iopscience.iop.org/article/10.1088/0256-307X/23/3/031/pdf
Ending Page	638
Page Count	4
Starting Page	635
ISSN	0256307X
e-ISSN	17413540
DOI	10.1088/0256-307x/23/3/031
Journal	Chinese Physics Letters
Issue Number	3
Volume Number	23
Language	English
Publisher	IOP Publishing
Publisher Date	2006-02-24
Access Restriction	Open
Subject Keyword	Journal: Chinese Physics Letters Atomic, Molecular and Chemical Physics Nonlinear Optical Liquid Crystal Squarylium Dye Optical Susceptibility Order Nonlinear Nematic Liquid
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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