WAVELENGTH-MODULATION DETECTION OF ACETYLENE WITH A NEAR-INFRARED EXTERNAL-CAVITY DIODE-LASER

被引：20

作者：

OH, DB

HOVDE, DC

机构：

[1] Southwest Sciences Inc., Santa Fe, NM, 87505, 1570 Pacheco Street

来源：

APPLIED OPTICS | 1995年 / 34卷 / 30期

关键词：

WAVELENGTH MODULATION; NOISE CANCELER; EXTERNAL-CAVITY DIODE LASER; ACETYLENE;

D O I：

10.1364/AO.34.007002

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An external-cavity diode laser operating at 1500 nm was used to record the combination band of acetylene (C2H2). By combination of wavelength-modulation spectroscopy with a noise-canceler detection circuit, a minimum detectable absorbance of 4.8 x 10(-4) with a 300-ms time constant was achieved, although this result was limited by etalon fringes. When combined with this detection technique, continuous, widely tunable output from an external-cavity laser is ideally suited for high-resolution absorption spectroscopy with excellent sensitivity. (C) 1995 Optical Society of America

引用

页码：7002 / 7005

页数：4

共 13 条

[1] FREQUENCY-MODULATION AND WAVELENGTH MODULATION SPECTROSCOPIES - COMPARISON OF EXPERIMENTAL METHODS USING A LEAD-SALT DIODE-LASER [J].