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Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

Photoinduced Birefringence; Polarization Holography; 2-Photon; Absorption; Solid Matrices; Stilbene; Physics; Applied

Abstract

The polymeric electro-optical stilbene material, 4-dimethylamino-4 '-nitrostilbene (DANS), was illuminated at wavelengths ranging from the visible to near-infrared in order to quantify its photodegradation processes. Photodegradation due to one-photon and two-photon absorption was studied. The quantum efficiency of the chromophore degradation is found to be strongly wavelength and absorption mechanism dependent. This suggests that, in different regions of the spectrum, different excited states or different mechanisms are involved in the degradation process. In the near-infrared spectral region, operation lifetimes of electro-optic devices made from this chromophore are expected to be around only few hundreds hours, dramatically shorter than it was previously believed.

Journal Title

Applied Physics Letters

Volume

73

Issue/Number

7

Publication Date

1-1-1998

Document Type

Article

Language

English

First Page

912

Last Page

914

WOS Identifier

WOS:000075449000017

ISSN

0003-6951

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