摘要We present the detection of hydrogen sulfide (H2S) 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−1Hz−1/2 and the H2S broadening coefficient in N2 is analyzed by fitting to the plot of the Lorentzian half width at the half maximum as a function of N2 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.
Abstract：We present the detection of hydrogen sulfide (H2S) 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−1Hz−1/2 and the H2S broadening coefficient in N2 is analyzed by fitting to the plot of the Lorentzian half width at the half maximum as a function of N2 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.
(Infrared spectrometers, auxiliary equipment, and techniques)
引用本文:
WANG Ling-Fang;**;SHARPLES Thomas-Roben
. Monitoring Hydrogen Sulfide Using a Quantum Cascade Laser Based Trace Gas Sensing System[J]. 中国物理快报, 2011, 28(6): 67805-067805.
WANG Ling-Fang, **, SHARPLES Thomas-Roben
. Monitoring Hydrogen Sulfide Using a Quantum Cascade Laser Based Trace Gas Sensing System. Chin. Phys. Lett., 2011, 28(6): 67805-067805.
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