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Proceedings Paper

Auger upconversion process in Cr3+ and Nd3+ doped solids
Author(s): V. Pilla; A. A. Andrade; Tomaz Catunda; Hans Jenssen; Arlete Cassanho
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Paper Abstract

In this work we applied the Thermal Lens (LT) technique to determine the upconversion parameter for Cr3+:LiSrAlF6, Cr3+:LiSrGaF6, Cr3+:SrAlF5 and Nd3+:ZBLAN. The measures for the Cr3+ doped fluorides were accomplished at 15 degrees C to eliminate the suppression effect due to temperature and upon excitation in the cw regime. We used Ar+ laser and dye laser radiation for the Cr3+ doped crystals and 514 nm and 796.7 nm for the Nd3+ doped glasses. We observed a nonlinear increase of the TL signal with excitation power, characterizing a fluorescence quantum efficiency decrease that was attributed to the Auger effect. A theoretical model was developed to obtain (gamma) from the TL data.

Paper Details

Date Published: 14 August 2001
PDF: 4 pages
Proc. SPIE 4419, 4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications, (14 August 2001); doi: 10.1117/12.437205
Show Author Affiliations
V. Pilla, Univ. de Sao Paulo (Brazil)
A. A. Andrade, Univ. de Sao Paulo (Brazil)
Tomaz Catunda, Univ. de Sao Paulo (Brazil)
Hans Jenssen, CREOL/Univ. of Central Florida (United States)
Arlete Cassanho, AC Materials, Inc. (United States)


Published in SPIE Proceedings Vol. 4419:
4th Iberoamerican Meeting on Optics and 7th Latin American Meeting on Optics, Lasers, and Their Applications

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