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Proceedings Paper

Low frequency calibration of hydrophones by self-mixing interferometry at UME
Author(s): Eyüp Bilgic; Enver Sadikoglu; Baki Karaböce; Cafer Kirbas; A. Izzet Turan; Arzu Çolak
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Paper Abstract

Realization and dissemination of the unit of sound pressure in water are carried out through calibration of hydrophones and underwater acoustic transducers. Different calibration methods applicable for different frequency ranges are available for this purpose. For calibration of reference hydrophones at low frequencies air-water pistonphone has been constructed at Turkish National Metrology Institute (UME). One of the main parts of the calibration system is optical interferometer. Two different interferometer types were used for the precise displacement measurements. The hydrophone calibrations performed by using air-water pistonphone both with homodyne Michelson interferometer and diode laser based self-mixing interferometer, ECDL.

Paper Details

Date Published: 21 June 2006
PDF: 5 pages
Proc. SPIE 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 63451K (21 June 2006); doi: 10.1117/12.693090
Show Author Affiliations
Eyüp Bilgic, TÜBITAK Ulusal Metroloji Enstitüsü (Turkey)
Enver Sadikoglu, TÜBITAK Ulusal Metroloji Enstitüsü (Turkey)
Baki Karaböce, TÜBITAK Ulusal Metroloji Enstitüsü (Turkey)
Cafer Kirbas, TÜBITAK Ulusal Metroloji Enstitüsü (Turkey)
A. Izzet Turan, TÜBITAK Ulusal Metroloji Enstitüsü (Turkey)
Arzu Çolak, TÜBITAK Ulusal Metroloji Enstitüsü (Turkey)

Published in SPIE Proceedings Vol. 6345:
Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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