Applied Physics B

, Volume 119, Issue 1, pp 21–27

A quartz-enhanced photoacoustic sensor for H2S trace-gas detection at 2.6 μm

  • S. Viciani
  • M. Siciliani de Cumis
  • S. Borri
  • P. Patimisco
  • A. Sampaolo
  • G. Scamarcio
  • P. De Natale
  • F. D’Amato
  • V. Spagnolo
Article

DOI: 10.1007/s00340-014-5991-y

Cite this article as:
Viciani, S., Siciliani de Cumis, M., Borri, S. et al. Appl. Phys. B (2015) 119: 21. doi:10.1007/s00340-014-5991-y

Abstract

We report on the realization of a quartz-enhanced photoacoustic (QEPAS) sensor for measurement of H2S gas traces. A distributed feedback diode laser working at 2.64 µm wavelength has been coupled to an acoustic detection module composed of a quartz tuning fork and a micro-resonator system, and the QEPAS signal has been optimized in terms of gas sample pressure and laser frequency modulation depth. The sensor shows a very good linearity with respect to the H2S concentration. We performed an Allan–Werle variance analysis to investigate the sensor long-term stability, and we reached a detection limit of four parts per million for 1-s integration time and 500 parts per billion in 60-s integration time. The realized QEPAS sensor represents a good compromise between performance and handiness, in view of a fully portable device.

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • S. Viciani
    • 1
  • M. Siciliani de Cumis
    • 1
  • S. Borri
    • 1
  • P. Patimisco
    • 2
  • A. Sampaolo
    • 2
  • G. Scamarcio
    • 2
  • P. De Natale
    • 1
  • F. D’Amato
    • 1
  • V. Spagnolo
    • 2
  1. 1.CNR, Istituto Nazionale di Ottica (INO)European Laboratory for Nonlinear Spectroscopy (LENS)Sesto FiorentinoItaly
  2. 2.Dipartimento Interateneo di Fisica, CNR, Istituto di Fotonica e Nanotecnologie (IFN) UOS BariUniversità e Politecnico di BariBariItaly

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