Applied Physics B

, Volume 100, Issue 1, pp 125–130

NO trace gas sensor based on quartz-enhanced photoacoustic spectroscopy and external cavity quantum cascade laser

Authors

    • CNR—Istituto di Fotonica e Nanotecnologie and Dipartimento Interateneo di Fisica “M. Merlin”Politecnico di Bari
  • A. A. Kosterev
    • Department of Electrical and Computer EngineeringRice University
  • L. Dong
    • Department of Electrical and Computer EngineeringRice University
  • R. Lewicki
    • Department of Electrical and Computer EngineeringRice University
  • F. K. Tittel
    • Department of Electrical and Computer EngineeringRice University
Article

DOI: 10.1007/s00340-010-3984-z

Cite this article as:
Spagnolo, V., Kosterev, A.A., Dong, L. et al. Appl. Phys. B (2010) 100: 125. doi:10.1007/s00340-010-3984-z

Abstract

A gas sensor based on quartz-enhanced photoacoustic detection and an external cavity quantum cascade laser was realized and characterized for trace nitric oxide monitoring using the NO R(6.5) absorption doublet at 1900.075 cm−1. Signal and noise dependence on gas pressure were studied to optimize sensor performance. The NO concentration resulting in a noise-equivalent signal was found to be 15 parts per billion by volume, with 100 mW optical excitation power and a data acquisition time of 5 s.

Copyright information

© Springer-Verlag 2010