Evaluation of Cr-doped yttrium aluminum garnet crystals for hybrid fiber-optic thermometer application

被引：35

作者：

Aizawa, H

Katsumata, T

Kiyokawa, Y

Nishikawa, T

Sasagawa, T

Komuro, S

Morikawa, T

Ishizawa, H

Toba, E

机构：

[1] Toyo Univ, Fac Engn, Sensor Photon Res Ctr, Kawagoe, Saitama 3508585, Japan

[2] Shinshu Univ, Fac Text Sci & Technol, Ueda, Nagano 2868567, Japan

来源：

MEASUREMENT | 2006年 / 39卷 / 02期

关键词：

temperature sensor; Cr-doped YAG; PL lifetime; blackbody radiation; optical fibre;

D O I：

10.1016/j.measurement.2005.10.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Rare-earth aluminate crystals have chemical and thermal stability, which are advantage for the sensor materials of a fiber-optic fluorescence thermometer. Among many rare-earth aluminate crystals, rare-earth garnet, Y3Al5O12, doped with Cr2O3 (Cr-doped YAG), is found to be useful as the sensor materials for fluorescence thermometer. Fluorescence lifetime of Cr-doped YAG crystal decreases from 2 ms to 0.1 ms as the temperature increases from 273 K to 900 K. Moreover, thermal radiation from Cr-doped YAG crystal can be observed from 800 K using Si photo-detector. The fiber-optic thermometer with extremely wide temperature range is considered to be produced by the combination of the temperature dependence of the fluorescence lifetime and the thermal radiation from Cr-doped YAG crystal. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：147 / 152

页数：6

共 10 条

[1] Characteristics of sapphire fiber connected with ruby sensor head for the fiber-optic thermometer applications [J].