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Proceedings Paper

Nd3+-doped sol-gel glasses: enhanced fluorescence lifetime by Al-codoping and CO2-laser processing
Author(s): Bettina Wilhelm; Valerio Romano; Heinz P. Weber
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Paper Abstract

The influence of aluminum co-doping and CO2-laser processing on the fluorescence lifetime of neodymium doped sol-gel derived silica glasses has been studied. The combination of host material modification and thermal treatment offers a possibility to overcome the limitations set on the fluorescence lifetime of Nd3+-doped silica by clustering, concentration quenching, and phonon quenching. Our study focuses on the fluorescing behavior of the produced samples depending on different methods of thermal annealing and host material modification. We show that neodymium doped sol-gel derived silica glasses, modified with aluminum and treated with a CO2-laser exhibit a fluorescence lifetime of several hudnred microseconds at high dopant concentrations (e.g. 280±6μs for a Nd3+-concentration of 1.1×1021 cm-3).

Paper Details

Date Published: 14 November 2003
PDF: 8 pages
Proc. SPIE 5147, ALT'02 International Conference on Advanced Laser Technologies, (14 November 2003); doi: 10.1117/12.543657
Show Author Affiliations
Bettina Wilhelm, Univ. of Bern (Switzerland)
Valerio Romano, Univ. of Bern (Switzerland)
Heinz P. Weber, Univ. of Bern (Switzerland)


Published in SPIE Proceedings Vol. 5147:
ALT'02 International Conference on Advanced Laser Technologies
Heinz P. Weber; Vitali I. Konov; Thomas Graf, Editor(s)

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