Title :
Rare-earth aluminate crystals for fluorescence thermometer application
Author :
Katsumata, T. ; Kawaguchi, N. ; Fujimaki, Y. ; Kiyokawa, Y. ; Aizawa, H. ; Komuro, S. ; Morikawa, T. ; Toba, E.
Author_Institution :
Sensor Photonics Res. Center, Toyo Univ., Saitama, Japan
Abstract :
Rare-earth aluminate crystals have the advantage of chemical and thermal stability as the sensor materials of a fiber-optic fluorescence thermometer. Among many rare-earth aluminate crystals, rare-earth garnet, Y/sub 3/Al/sub 5/O/sub 12/, doped with Cr/sub 2/O/sub 3/, is found to be useful as the sensor material for a fluorescence thermometer. Temporal characteristics of fluorescence from Cr doped Y/sub 3/Al/sub 5/O/sub 12/ crystals are comparable to that of ruby (Cr doped Al/sub 2/O/sub 3/) crystal.
Keywords :
chromium; fibre optic sensors; fluorescence; optical materials; phosphors; spectral methods of temperature measurement; thermal stability; thermometers; yttrium compounds; Cr doped Y/sub 3/Al/sub 5/O/sub 12/ crystal; Cr:Al/sub 2/O/sub 3/; Y/sub 3/Al/sub 5/O/sub 12/:Cr; chemical stability; fiber-optic fluorescence thermometer; optical fiber; phosphor; rare-earth aluminate crystal; rare-earth garnet; ruby; sensor material; thermal stability;
Conference_Titel :
SICE 2004 Annual Conference
Conference_Location :
Sapporo
Print_ISBN :
4-907764-22-7
