Nd<sup>3+</sup>-doped sol-gel glasses: enhanced fluorescence lifetime by Al-codoping and CO<sub>2</sub>-laser processing

Bettina Wilhelm; Valerio Romano; Heinz P. Weber

doi:10.1117/12.543657

14 November 2003 Nd³⁺-doped sol-gel glasses: enhanced fluorescence lifetime by Al-codoping and CO₂-laser processing

Bettina Wilhelm, Valerio Romano, Heinz P. Weber

Proceedings Volume 5147, ALT'02 International Conference on Advanced Laser Technologies; (2003) https://doi.org/10.1117/12.543657
Event: ALT'02 International Conference on Advanced laser Technologies, 2002, Adelboden, Switzerland

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).

Citation Download Citation

Bettina Wilhelm, Valerio Romano, and Heinz P. Weber "Nd³⁺-doped sol-gel glasses: enhanced fluorescence lifetime by Al-codoping and CO₂-laser processing", Proc. SPIE 5147, ALT'02 International Conference on Advanced Laser Technologies, (14 November 2003); https://doi.org/10.1117/12.543657

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