红外与毫米波学报2012，Vol.31Issue(5)：431-436,6.DOI:10.3724/SP.J.1010.2012.00431
基于量子级联激光器光腔衰荡光谱技术的痕量氨气检测
Cavity ring-down spectroscopy for trace ammonia detection
摘要
Abstract
A cavity ring-down spectroscopy apparatus employing a pulsed quantum cascade laser operating near 1027 cm-1 (9.7 μm) is investigated for trace ammonia detection. The trace ammonia in human breath and clean room atmosphere are measured and analyzed. A sensitivity of 10 ppb has been demonstrated for ammonia detection. The effects of the spectral line-width on the measurement accuracy and sensitivity of the system are analyzed. The measurement accuracy and sensitivity of the apparatus decrease with the increasing laser spectral line-width. The measurement results can be corrected by taking into account of the line-width effect in data analysis.关键词
光腔衰荡光谱/量子级联激光器/氨气/线宽Key words
cavity ring-down spectroscopy/ quantum cascade laser/ ammonia/ line-width分类
数理科学引用本文复制引用
曲哲超,李斌成,韩艳玲..基于量子级联激光器光腔衰荡光谱技术的痕量氨气检测[J].红外与毫米波学报,2012,31(5):431-436,6.基金项目
国家自然科学基金项目(60878038) （60878038）
