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Optica Publishing Group
  • Imaging and Applied Optics 2018 (3D, AO, AIO, COSI, DH, IS, LACSEA, LS&C, MATH, pcAOP)
  • OSA Technical Digest (Optica Publishing Group, 2018),
  • paper SM3H.5
  • https://doi.org/10.1364/LSC.2018.SM3H.5

Fast and calibration-free trace-gas monitoring based on beat frequency quartz-enhanced photoacoustic spectroscopy

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Abstract

Beat frequency QEPAS sensor for ultra-sensitive calibration-free trace gas detection was developed. The resonance frequency and Q-factor of the quartz tuning fork as well as the trace gas concentration can be obtained simultaneously.

© 2018 The Author(s)

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