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Proceedings Paper

Nonlinear optics of astaxanthin thin films
Author(s): A. Esser; Herbert Fisch; Karl-Heinz Haas; E. Haedicke; J. Paust; Wolfgang Schrof; Anton Ticktin
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Paper Abstract

Carotinoids exhibit large nonlinear optical properties due to their extended (pi) -electron system. Compared to other polyenes which show a broad distribution of conjugation lengths, carotinoids exhibit a well defined molecular structure, i.e. a well defined conjugation length. Therefore the carotinoid molecules can serve as model compounds to study the relationship between structure and nonlinear optical properties. In this paper the synthesis of four astaxanthins with C-numbers ranging from 30 to 60, their preparation into thin films, wavelength dispersive Third Harmonic Generation (THG) measurements and some molecular modelling calculations will be presented. Resonant (chi) (3) values reach 1.2(DOT)10-10 esu for C60 astaxanthin. In the nonresonant regime a figure of merit (chi) (3)/(alpha) of several 10-13 esu-cm is demonstrated.

Paper Details

Date Published: 25 February 1993
PDF: 10 pages
Proc. SPIE 1775, Nonlinear Optical Properties of Organic Materials V, (25 February 1993); doi: 10.1117/12.139213
Show Author Affiliations
A. Esser, BASF AG (Germany)
Herbert Fisch, BASF AG (Germany)
Karl-Heinz Haas, BASF Advanced Polymer Research (Japan)
E. Haedicke, BASF AG (Germany)
J. Paust, BASF AG (Germany)
Wolfgang Schrof, BASF AG (Germany)
Anton Ticktin, BASF Advanced Polymer Research (Japan)

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

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