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Digitale Medien

Photodegradation of Luminescence in SiO2 : Rh B Gels Exposed to YAG : Nd Laser Pulses (1998)

Garcia, J. ; Ramirez, E. ; Mondragon, M.A. ; [weitere]

Springer

Journal of sol gel science and technology 13 (1998), S. 657-661

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Details

ISSN: 1573-4846

Schlagwort(e): luminescence ; photostability ; photobleaching ; Rhodamine B ; silica gels

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract Silicate gels doped with organic dyes have been proposed as solid-state tunable lasers. Photobleaching of the dye under laser excitation is an important phenomenon in this application. The optical absorption and luminescence of SiO2 silica gels doped with Rhodamine B exposed to the second harmonic pulses of a YAG : Nd laser have been studied. In addition to the characteristic exponential decay with the number of pulses, overlapping oscillations in the intensity were observed. This behavior is explained in terms of a long lived metastable electronic excited state of the dye molecules.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1008624201781

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