Chromium doped phosphor based fiber-optic thermometer

Author

Aizawa, H. ; Toba, E. ; Katsumata, T. ; Komuro, S. ; Morikawa, T.

Author_Institution

Fac. of Textile Sci. & Technol., Shinshu Univ., Ueda, Japan

Volume

1

fYear

2003

fDate

22-24 Oct. 2003

Firstpage

88

Abstract

A variety of chromium (Cr³⁺) doped phosphors has been studied for a sensor head materials in the fiber-optic thermometer, have been studied. Cr doped alumina (Cr:Al₂O₃), spinel (Cr:MgAl₂O₄) and yttrium ortho-aluminate (Cr:YAlO₃) crystals are grown using floating zone (FZ) technique. The value and temperature coefficient of photoluminescence (PL) lifetime are evaluated using the fiberoptic thermometer equipment. The value and temperature coefficient of PL lifetime vary greatly with the host materials. Among them, perovskite type Cr:YAlO₃ crystal shows the longest PL lifetime and the largest temperature coefficient. Cr doped YAlO₃ crystal is a potentially useful sensor material for fiber-optic thermometer due to long PL lifetime and large temperature coefficient of PL lifetime.

Keywords

alumina; chromium; fibre optic sensors; magnesium compounds; phosphors; photoluminescence; thermometers; yttrium compounds; Cr doped YAlO₃ crystal; Cr doped alumina crystals; Cr doped spinel crystals; Cr doped yttrium ortho-aluminate crystals; Cr:Al₂O₃; Cr:MgAl₂O₄; Cr:YAlO₃; chromium doped phosphor; fiber-optic thermometer; fiberoptic thermometer equipment; floating zone technique; optical fiber; perovskite type Cr:YAlO₃ crystal; photoluminescence lifetime; sensor head material; temperature coefficient; Chromium; Crystalline materials; Crystals; Optical fiber devices; Optical fiber sensors; Phosphors; Photoluminescence; Temperature sensors; Thermal sensors; Yttrium;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2003. Proceedings of IEEE

Print_ISBN

0-7803-8133-5

Type

conf

DOI

10.1109/ICSENS.2003.1278902

Filename

1278902