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Proceedings Paper

Two-photon photochromism of a photorefractive organic material for holographic recording
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Paper Abstract

We report the two-photon induced photoisomerization of 3-[1-(1,2- dimethyl-1H-indol-3-yl)-ethylidene]-4-isopropylidene-dihydro-furan- 2,5-dione (1), a photochromic compound with (lambda) maxequals385nm, using 775 fs pulses. The resulting photoisomer has a (lambda) maxequals582 nm. The kinectic rate contant for the isomerization reaction w as measured at two different intensities (two different powers), showing a quadratic dependence with respect to the pump intensity. Results of pump-probe solution phase experiments and guest/host polymer thin film interferometric imaging studies are shown. A two-photon absorption molecular cross-section (sigma) 2equals10.3 x 10- 45 cm4 s/photon was measured using Z-scan, supporting a two photon induced isomerization process.

Paper Details

Date Published: 13 November 2000
PDF: 8 pages
Proc. SPIE 4104, Organic Photorefractives, Photoreceptors, and Nanocomposites, (13 November 2000); doi: 10.1117/12.406480
Show Author Affiliations
Kevin D. Belfield, CREOL/Univ. of Central Florida and Univ. of Central Florida (United States)
David J. Hagan, CREOL/Univ. of Central Florida (United States)
Yong Liu, Univ. of Central Florida (United States)
Raluca A. Negres, CREOL/Univ. of Central Florida (United States)
Meigong Fan, Univ. of Central Florida (China)
Florencio Eloy Hernandez, CREOL/Univ. of Central Florida (United States)

Published in SPIE Proceedings Vol. 4104:
Organic Photorefractives, Photoreceptors, and Nanocomposites
Keith L. Lewis; Klaus Meerholz; Klaus Meerholz, Editor(s)

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