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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4458

Title: Spectral dispersion of second molecular hyperpolarizability of diacetylene derivatives: Correlation with electronic and chemical structure
Authors: NAMPOOTHIRI, AVV
PUNTAMBEKAR, PN
SINGH, BP
SACHDEVA, R
SARKAR, A
SAHA, D
SURESH, AN
TALWAR, SS
Keywords: nonlinear-optical-properties
thin-films
3rd-harmonic generation
2-photon absorption
model compounds
susceptibility
polymerization
polythiophene
units
Issue Date: 1998
Publisher: AMER INST PHYSICS
Citation: JOURNAL OF CHEMICAL PHYSICS, 109(2), 685-690
Abstract: 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
URI: http://dx.doi.org/10.1063/1.476607
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4458
http://hdl.handle.net/10054/4458
ISSN: 0021-9606
Appears in Collections:Article

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