Compact and portable open-path sensor for simultaneous measurements of atmospheric N2O and CO using a quantum cascade laser.

@article{Tao2012CompactAP,
  title={Compact and portable open-path sensor for simultaneous measurements of atmospheric N2O and CO using a quantum cascade laser.},
  author={Lei Tao and Kang Sun and M. Amir Khan and David J. Miller and Mark A. Zondlo},
  journal={Optics express},
  year={2012},
  volume={20 27},
  pages={
          28106-18
        }
}
A compact and portable open-path sensor for simultaneous detection of atmospheric N(2)O and CO has been developed with a 4.5 μm quantum cascade laser (QCL). An in-line acetylene (C(2)H(2)) gas reference cell allows for continuous monitoring of the sensor drift and calibration in rapidly changing field environments and thereby allows for open-path detection at high precision and stability. Wavelength modulation spectroscopy (WMS) is used to detect simultaneously both the second and fourth… Expand
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Simultaneous detection of atmospheric CO and CH4 based on TDLAS using a single 2.3 μm DFB laser.
  • Ligang Shao, Bo Fang, +5 authors W. Zhao
  • Medicine, Chemistry
  • Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
  • 2019
TLDR
A laser-based spectrometer with a physical size of 60× 30 ×25 cm3 has been developed to continuously monitor CO and CH4 in atmosphere based on tunable diode laser absorption spectroscopy (TDLAS) and has been validated through real-time and in-situ measurement of atmospheric CO andCH4 for 48 h. Expand
Open-path, quantum cascade-laser-based sensor for high-resolution atmospheric ammonia measurements
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Long-Path Quantum Cascade Laser–Based Sensor for Methane Measurements
AbstractA long-path methane (CH4) sensor was developed and field deployed using an 8-μm quantum cascade laser. The high optical power (40 mW) of the laser allowed for path-integrated measurements ofExpand
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An IH-QCL based gas sensor for simultaneous detection of methane and acetylene
Abstract Extended wavelength tuning of an IH-QCL (integrated heater quantum cascade laser) is exploited for simultaneous detection of methane and acetylene using direct absorption spectroscopy. TheExpand
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