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Proceedings Paper

Thienyl-bridged oligomeric squaraines of the indole series: synthesis and optical properties
Author(s): Walter Grahn; Ulf Lawrentz; Dieter Scherer; Robert Doerfler; Andreas Feldner; Markus Schwoerer; Christoph Lambert; Ina Dix; Peter George Jones
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Paper Abstract

The third-order optical polarizabilities (gamma) of a new homologous series of oligomeric squaraines of the indole series (monomer-pentamer) and of corresponding monomers were investigated by degenerate four wave mixing (DFWM) at 1064 nm and related to results from two-photon absorption experiments in an energy range from 1.75 to 3.2 eV. Important two-photon contributions can be deduced to vibronic coupling and the influence to (gamma) has been considered within a four-level model. The nature of the subchromophore interaction within the oligomers can succesfully be described as mainly electrostatic within the framework of simple exciton coupling theory.

Paper Details

Date Published: 7 December 2001
PDF: 15 pages
Proc. SPIE 4461, Linear and Nonlinear Optics of Organic Materials, (7 December 2001); doi: 10.1117/12.449849
Show Author Affiliations
Walter Grahn, Technical Univ. of Braunschweig (Germany)
Ulf Lawrentz, Technical Univ. of Braunschweig (Germany)
Dieter Scherer, Univ. of Bayreuth (Germany)
Robert Doerfler, Univ. of Bayreuth (Germany)
Andreas Feldner, Univ. of Bayreuth (Germany)
Markus Schwoerer, Univ. of Bayreuth (Germany)
Christoph Lambert, Univ. of Wuerzburg (Germany)
Ina Dix, Technical Univ. of Braunschweig (Germany)
Peter George Jones, Technical Univ. of Braunschweig (Germany)

Published in SPIE Proceedings Vol. 4461:
Linear and Nonlinear Optics of Organic Materials
Manfred Eich; Mark G. Kuzyk, Editor(s)

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