Thermoelastic investigation of a quartz tuning fork used in infrared spectroscopy

Journal Article · Mon Nov 11 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4830417· OSTI ID:22254071

Cavallier, B.; Euphrasie, S.; Matten, G.; Vacheret, X.; Vairac, P.; Vernier, D. ^[1]; Jalocha, A. ^[2]

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1. Institut FEMTO-ST, Université de Franche-Comté, CNRS, ENSMM, UTBM, 32 avenue de l'Observatoire, F-25044 Besançon cedex (France)
2. CILAS, Département de Photonique, 8 avenue Buffon, BP 6319, F-45000 Orléans (France)

The performances of quartz tuning forks (QTF) used in infrared spectroscopy for pollutant detection are investigated. The transduction between light and QTF vibration is elucidated, thanks to QTF encapsulation under vacuum. From the sensitivity enhancement which is obtained, we conclude that their interaction is photo-thermoelastic rather than photo-thermoacoustic. A mapping of the local sensitivity of the QTF is obtained by scanning its faces with the excitation probe beam. The comparison between the signal mapping and the theoretical strain mapping indicates that the most efficient areas of the QTF correspond to the areas where the strain or stress is the highest.

• OSTI ID: 22254071
• Journal Information: Applied Physics Letters, Vol. 103, Issue 20; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
BEAMS
INFRARED SPECTRA
QUARTZ
STRAINS
VISIBLE RADIATION