Monitoring Hydrogen Sulfide Using a Quantum Cascade Laser Based Trace Gas Sensing System  

作　　者：WANG Ling-Fang SHARPLES Thomas-Roben 王玲芳;SHARPLES Thomas-Roben(Microsystem Research Center,Chongqing University,Chongqing 400030;Department of Chemistry,University of Oxford,Oxford,England,UK)

机构地区：[1]Microsystem Research Center,Chongqing University,Chongqing 400030 [2]Department of Chemistry,University of Oxford,Oxford,England,UK

出　　处：《Chinese Physics Letters》2011年第6期302-304,共3页中国物理快报（英文版）

基　　金：by the National Natural Science Foundation of China under Grant Nos 60850006 and 61077057;the International S&T Cooperation Program of China under Grant Nos 2007DFC00040 and 2009DFB10440.

摘　　要：We present the detection of hydrogen sulfide(H_(2)S)in a quantum cascade laser(QCL)based gas sensing system employing direct laser absorption spectroscopy.The sensitivity is obtained to be 3.61×10^(−6) cm^(−1)Hz^(−1/2) and the H_(2)S broadening coefficient in N2 is analyzed by fitting to the plot of the Lorentzian half width at the half maximum as a function of N_(2) pressure is 0.1124±0.0031 cm^(−1)·atm^(−1).A simulation based on data from the HITRAN database shows broad agreement with the experimentally obtained spectrum.

关 键 词：QUANTUM SULFIDE CASCADE 

分 类 号：TN2[电子电信—物理电子学]