A new Method to Determine the Resonance Frequency in QEPAS

Breitegger, P. (Speaker), Lang, B. (Contributor), Bergmann, A. (Contributor)

Activity: Talk or presentationTalk at conference or symposiumScience to science


We present a novel method to determine the resonance frequency and Q factor of a quartz tuning fork (QTF) in quartz-enhanced photoacoustic spectroscopy (QEPAS) in a few seconds. A CHIRP modulates a laser diode.
Period17 May 2018
Held at2018 Conference on Lasers and Electro-Optics, CLEO 2018
Event typeConference
LocationSan Jose, United States
Degree of RecognitionInternational


  • Chirp modulation
  • Diode lasers
  • Fast Fourier transforms
  • Frequency modulated lasers
  • Modulation
  • Q factor