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Proceedings Paper

Mixed-valence ion-doped PVA as potential materials for real-time holography
Author(s): M. Bulinski; V. Kuncser; Iancu Iova; A. Bela; Hilmar Franke; U. Russo; G. Filoti
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Paper Abstract

Mixed valence ion doped polymers are potential materials for the real time holography. We review the intimate mechanisms imposing suitable optical properties in Fe:PVA, stressing on the main role played by the Fe ions. Under the UV exposure, both the refractive index and the absorption coefficient are changing due to a local electron transfer from the PVA matrix to the Fe3+ ions. The absorption coefficient proved to be dependent on a new-formed low spin Fe2+ state whereas the refractive index and the absorption coefficient are changing due to a local electron transfer from the PVA matrix to the Fe3+ ions. The absorption coefficient proved to be dependent on a new-formed low spin Fe2+ state whereas the refractive index is related to the total content of the high spin Fe2+ state. The diffraction efficiency data are explained in terms of the Fe2+/Fe3+ ratio. Additional data concerning the electron transfer in Sn:PVA thin films are also discussed.

Paper Details

Date Published: 23 February 2000
PDF: 9 pages
Proc. SPIE 4068, SIOEL '99: Sixth Symposium on Optoelectronics, (23 February 2000); doi: 10.1117/12.378670
Show Author Affiliations
M. Bulinski, Univ. of Bucharest (Romania)
V. Kuncser, National Institute for Physics of Materials (Romania)
Iancu Iova, Univ. of Bucharest (Romania)
A. Bela, Univ. of Bucharest (Romania)
Hilmar Franke, Univ. Gesamthochschule Duisburg (Germany)
U. Russo, Univ. degli Studi di Padova (Italy)
G. Filoti, National Institute for Physics of Materials (Romania)


Published in SPIE Proceedings Vol. 4068:
SIOEL '99: Sixth Symposium on Optoelectronics
Teodor Necsoiu; Maria Robu; Dan C. Dumitras, Editor(s)

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