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Proceedings Paper

Ellipsometric determination of space-charge fields in photorefractive polymers
Author(s): Francisco Gallego-Gomez; Erwin Mecher; Klaus Meerholz
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Paper Abstract

A simple ellipsometric technique is traditionally used for investigating the non-linear optical effects in poled polymer matrices. Upon writing a hologram in a low glass-transition-temperature photorefractive polymer composite, the chromophores are oriented in situ by the formed space-charge field. This way, the orientation of the chromophores gives us information about the latter one. We show how simple transmission ellipsometry can reproduce the results of the standard four-wave-mixing technique, yielding the quantitative determination of the space-charge field. Besides, this technique offers high sensitivity at low poling fields. This method is simple, easy-adjustable, and non-erasing, i.e. ideally suited to complement traditional holographic methods.

Paper Details

Date Published: 8 December 2003
PDF: 9 pages
Proc. SPIE 4802, Organic Photorefractive and Photosensitive Materials for Holographic Applications, (8 December 2003); doi: 10.1117/12.452418
Show Author Affiliations
Francisco Gallego-Gomez, Ludwig-Maximilians-Univ. Muenchen (Germany)
Erwin Mecher, Ludwig-Maximilians-Univ. Muenchen (Germany)
Klaus Meerholz, Ludwig-Maximilians-Univ. Muenchen (Germany)

Published in SPIE Proceedings Vol. 4802:
Organic Photorefractive and Photosensitive Materials for Holographic Applications
Klaus Meerholz, Editor(s)

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