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Proceedings Paper

Optimizing the second-order optical nonlinearities of organic molecules: asymmetric cyanines and highly polarized polyenes
Author(s): Seth R. Marder; Christopher B. Gorman; Lap-Tak A. Cheng; Bruce G. Tiemann
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Paper Abstract

We recently reported that there is an optimal combination of donor and acceptor strengths for a given molecular length and bridge structure that maximizes (beta) . For this combination, there is the correct degree of bond length alternation and asymmetry in the molecule. Our recent findings suggest that molecules that can be viewed as asymmetric cyanines with relatively small amounts of bond length alternation are nearly optimal. In this manner, we have identified molecules with nonlinearities many times that of conventional chromophores for a given length. In this paper, we will present a new computational analysis that allows the correlation of bond length alternation with hyperpolarizabilities and will present EFISH data on simple donor-acceptor polyene chromophores.

Paper Details

Date Published: 25 February 1993
PDF: 13 pages
Proc. SPIE 1775, Nonlinear Optical Properties of Organic Materials V, (25 February 1993); doi: 10.1117/12.139208
Show Author Affiliations
Seth R. Marder, Jet Propulsion Lab. and Beckman Institute/California Institute of Technology (United States)
Christopher B. Gorman, Jet Propulsion Lab. (United States)
Lap-Tak A. Cheng, E.I. du Pont de Nemours & Co., Inc. (United States)
Bruce G. Tiemann, Jet Propulsion Lab. and Beckman Institute/California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 1775:
Nonlinear Optical Properties of Organic Materials V
David J. Williams, Editor(s)

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