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Spectral dispersion of second molecular hyperpolarizability of diacetylene derivatives: Correlation with electronic and chemical structure

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Field Value
 
Title Spectral dispersion of second molecular hyperpolarizability of diacetylene derivatives: Correlation with electronic and chemical structure
 
Creator NAMPOOTHIRI, AVV
PUNTAMBEKAR, PN
SINGH, BP
SACHDEVA, R
SARKAR, A
SAHA, D
SURESH, AN
TALWAR, SS
 
Subject nonlinear-optical-properties
thin-films
3rd-harmonic generation
2-photon absorption
model compounds
susceptibility
polymerization
polythiophene
units
 
Description Dispersion of the second hyperpolarizability gamma(- omega;omega, omega, - omega) of a series of conjugated diacetylene derivatives measured by single beam Z-scan technique, is presented. The spectrum of gamma is explained by a three-level model involving a one-photon excited state, a two-photon excited state and the ground state. The location of one and two-photon states and corresponding transition dipole moments have been estimated. The influence of various electronic states on the nonlinear optical properties of these derivatives have been discussed. Broad correlations of the nonlinearity with the structure have been drawn. (C) 1998
 
Publisher AMER INST PHYSICS
 
Date 2011-07-16T15:01:20Z
2011-12-26T12:49:50Z
2011-12-27T05:35:34Z
2011-07-16T15:01:20Z
2011-12-26T12:49:50Z
2011-12-27T05:35:34Z
1998
 
Type Article
 
Identifier JOURNAL OF CHEMICAL PHYSICS, 109(2), 685-690
0021-9606
http://dx.doi.org/10.1063/1.476607
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4458
http://hdl.handle.net/10054/4458
 
Language en