DIODE-PUMPED THULIUM-DOPED ZIRCONIUM FLUORIDE FIBER AS A FLUORESCENT SOURCE FOR WATER SENSING

被引：15

作者：

MCALEAVEY, FJ

MACCRAITH, BD

机构：

[1] Optical Sensors Laboratory, School of Physical Sciences, Dublin City University, Glavtevin

来源：

ELECTRONICS LETTERS | 1995年 / 31卷 / 16期

关键词：

RARE-EARTH DOPED FIBERS; OPTICAL SENSORS; HUMIDITY SENSORS;

D O I：

10.1049/el:19950895

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Tm3+-doped zirconium fluoride fibre pumped with a low-cost diode laser at 785nm is shown to function as a useful source for water or humidity sensing. The near-IR fluorescent emission band centred at 1.47 mu m exhibits considerable overlap with an absorption band of H2O. Using a variable path-length cell and the residual pump signal as a reference, the fluorescent fibre source is shown to enable measurement of path lengths as low as 1 mu m in liquid water. In addition, using a declad fibre as an evanescent-wave absorption probe, the feasibility of measuring water concentrations in other liquids is demonstrated.

引用

页码：1379 / 1380

页数：2