DUAL DIODE-LASER FIBEROPTIC DIAGNOSTIC FOR WATER-VAPOR MEASUREMENTS

被引：29
作者：
ARROYO, MP [1 ]
BIRBECK, TP [1 ]
BAER, DS [1 ]
HANSON, RK [1 ]
机构：
[1] UNIV ZARAGOZA,FAC CIENCIAS,DIPARTIMENTO FIS APLICADA,E-50009 ZARAGOZA,SPAIN
来源：
OPTICS LETTERS | 1994年 / 19卷 / 14期
关键词：
D O I：
10.1364/OL.19.001091
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a novel diode-laser diagnostic for water-vapor measurements based on absorption spectroscopy. Two InGaAsP diode lasers were used to record H2O absorption line shapes near 1395 nm at a 3-kHz repetition rate along a single path through a water-vapor flow field generated in a shock tube. The use of two lasers permits simultaneous line-shape measurements in different spectral regions and facilitates the selection of appropriate line pairs for thermometry. The wavelength tuning rate was determined by use of a fiber-optic device known as a ring interferometer. Flow-field conditions (1320 K, 0.3 atm) inferred from measured line shapes compared favorably with calculated values.
引用
收藏
页码：1091 / 1093
页数：3
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