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Proceedings Paper

Applications of rare-earth ion-doped crystals for temperature measurement
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Paper Abstract

Excited rare-earth ions relax radiatively and non-radiatively. The non-radiative relaxation rate and hence the lifetime of the excited level exhibit temperature dependence. These materials can be used to sense temperature below the melting point of the crystal. We have developed calibration standards using rare-earth ion doped crystals. The sensitivity of the technique and the applicable temperature range depends on the ionic energy levels and the type of crystal. We will discuss some of the results obtained in rare-earth ion doped fluoride and oxide crystals.

Paper Details

Date Published: 25 September 2007
PDF: 9 pages
Proc. SPIE 6755, Advanced Environmental, Chemical, and Biological Sensing Technologies V, 675509 (25 September 2007); doi: 10.1117/12.735692
Show Author Affiliations
Praveena Kommidi, Alabama A&M Univ. (United States)
Indumathi Kamma, Alabama A&M Univ. (United States)
B. Rami Reddy, Alabama A&M Univ. (United States)

Published in SPIE Proceedings Vol. 6755:
Advanced Environmental, Chemical, and Biological Sensing Technologies V
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)

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