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Optics Letters

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  • Vol. 24, Iss. 15 — Aug. 1, 1999
  • pp: 1026–1028

Optical multilayer detection array for fast ultrasonic field mapping

V. Wilkens and Ch. Koch  »View Author Affiliations


Optics Letters, Vol. 24, Issue 15, pp. 1026-1028 (1999)
http://dx.doi.org/10.1364/OL.24.001026


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Abstract

An optical multilayer detection array for ultrasonic measurements is presented. The probe comprises a dielectric interference filter structure that is evaporated onto a glass plate. An incident acoustic pressure signal deforms the layer system, and the induced modulation of the optical reflectance is determined by a simple optical detection scheme. The principle of measurement is demonstrated by a line scan through the focus of a broadband transducer and can be applied to rapid two-dimensional characterization of ultrasonic fields. The high temporal and spatial resolution of the measurements is combined with high sensitivity and durability of the probe, and, in contrast with fiber-tip multilayer hydrophones, the multilayer detection array provides signals that are not influenced by acoustic resonances and diffraction phenomena.

© 1999 Optical Society of America

OCIS Codes
(110.2970) Imaging systems : Image detection systems
(110.7170) Imaging systems : Ultrasound
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(230.4170) Optical devices : Multilayers

Citation
V. Wilkens and Ch. Koch, "Optical multilayer detection array for fast ultrasonic field mapping," Opt. Lett. 24, 1026-1028 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-15-1026


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References

  1. Ch. Koch, Ultrasonics 34, 687 (1996).
  2. V. Wilkens and Ch. Koch, Ultrasonics 37, 45 (1999).
  3. J. D. Hamilton and M. O'Donnell, IEEE Trans. Ultrason. Ferroelectr. Freq. Control 45, 216 (1998).
  4. F. S. Foster, L. K. Ryan, and D. H. Turnbull, IEEE Trans. Ultrason. Ferroelectr. Freq. Control 38, 446 (1991).
  5. Ch. Koch, G. Ludwig, and W. Molkenstruck, Ultrasonics 35, 297 (1997).

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