Spectral dispersion of second molecular hyperpolarizability of diacetylene derivatives: Correlation with electronic and chemical structure
DSpace at IIT Bombay
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Title |
Spectral dispersion of second molecular hyperpolarizability of diacetylene derivatives: Correlation with electronic and chemical structure
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Creator |
NAMPOOTHIRI, AVV
PUNTAMBEKAR, PN SINGH, BP SACHDEVA, R SARKAR, A SAHA, D SURESH, AN TALWAR, SS |
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Subject |
nonlinear-optical-properties
thin-films 3rd-harmonic generation 2-photon absorption model compounds susceptibility polymerization polythiophene units |
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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
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Publisher |
AMER INST PHYSICS
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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 |
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Type |
Article
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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 |
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Language |
en
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