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Proceedings Paper

Experimental demonstration of the relationship between the second- and third-order polarizabilities of conjugated donor-acceptor molecules
Author(s): Grant Bourhill; Lap-Tak A. Cheng; Christopher B. Gorman; Ging Lee; Seth R. Marder; Joseph W. Perry; M. J. Perry; Bruce G. Tiemann
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Paper Abstract

The dependence of the second- and third-order polarizabilities ((beta) and (gamma) ) on ground-state polarization was measured for a series of donor-acceptor polyenes using electric field induced second harmonic generation and third harmonic generation, respectively. The changes in ground-state polarization, associated with the donor/acceptor strength or solvent polarity, were probed by x-ray crystallography, 1H-NMR, electronic absorption, and Raman spectroscopies. The observed behavior of (beta) and (gamma) as a function of ground- state polarization agrees well with theoretical predictions. In particular, positive and negative peaks, as well as sign changes, were observed for both (beta) and (gamma) . The dependences for (beta) and (gamma) are consistent with a derivative relationship between them. In addition, the third-order polarizability of a series of molecules possessing zero bond length alternation was found to be negative, in agreement with predictions based on the relationship between the polarizabilities and ground-state geometry.

Paper Details

Date Published: 15 May 1994
PDF: 11 pages
Proc. SPIE 2143, Organic, Metallo-Organic, and Polymeric Materials for Nonlinear Optical Applications, (15 May 1994); doi: 10.1117/12.173815
Show Author Affiliations
Grant Bourhill, Jet Propulsion Lab. (United States)
Lap-Tak A. Cheng, E.I. du Pont de Nemours & Co., Inc. (United States)
Christopher B. Gorman, Jet Propulsion Lab. and The Beckman Institute (United States)
Ging Lee, California Institute of Technology (United States)
Seth R. Marder, Jet Propulsion Lab. and The Beckman Institute (United States)
Joseph W. Perry, California Institute of Technology (United States)
M. J. Perry, The Beckman Institute (United States)
Bruce G. Tiemann, Jet Propulsion Lab. and The Beckman Institute (United States)


Published in SPIE Proceedings Vol. 2143:
Organic, Metallo-Organic, and Polymeric Materials for Nonlinear Optical Applications
Seth R. Marder; Joseph W. Perry, Editor(s)

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