%0 Journal Article
%T Cavity ring-down spectroscopy for trace ammonia detection<br>基于量子级联激光器光腔衰荡光谱技术的痕量氨气检测
%A QU Zhe-Chao
%A LI Bin-Cheng
%A HAN Yan-Ling
%A <br>曲哲超
%A 李斌成
%A 韩艳玲
%J 红外与毫米波学报
%D 2012
%I Science Press
%X 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.
%K cavity ring-down spectroscopy
%K quantum cascade laser
%K ammonia
%K linewidth<br>光腔衰荡光谱
%K 量子级联激光器
%K 氨气
%K 线宽
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=D3B4F771D1A06062008B4D0A2EF05996&aid=22A44839E21A92B05D1195E21903DF79&yid=99E9153A83D4CB11&vid=4AD960B5AD2D111A&iid=94C357A881DFC066&sid=6D6BFCF0101BC091&eid=08076B8B3CC96095&journal_id=1001-9014&journal_name=红外与毫米波学报&referenced_num=0&reference_num=11