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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 7 — Mar. 1, 2009
  • pp: C33–C37

Air-coupled laser vibrometry: analysis and applications

Igor Solodov, Daniel Döring, and Gerd Busse  »View Author Affiliations


Applied Optics, Vol. 48, Issue 7, pp. C33-C37 (2009)
http://dx.doi.org/10.1364/AO.48.000C33


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Abstract

Acousto-optic interaction between a narrow laser beam and acoustic waves in air is analyzed theoretically. The photoelastic relation in air is used to derive the phase modulation of laser light in air-coupled reflection vibrometry induced by angular spatial spectral components comprising the acoustic beam. Maximum interaction was found for the zero spatial acoustic component propagating normal to the laser beam. The angular dependence of the imaging efficiency is determined for the axial and nonaxial acoustic components with the regard for the laser beam steering in the scanning mode. The sensitivity of air-coupled vibrometry is compared with conventional “Doppler” reflection vibrometry. Applications of the methodology for visualization of linear and nonlinear air-coupled fields are demonstrated.

© 2008 Optical Society of America

OCIS Codes
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(050.5080) Diffraction and gratings : Phase shift
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(280.3340) Remote sensing and sensors : Laser Doppler velocimetry
(100.3175) Image processing : Interferometric imaging

History
Original Manuscript: August 1, 2008
Manuscript Accepted: September 12, 2008
Published: October 31, 2008

Citation
Igor Solodov, Daniel Döring, and Gerd Busse, "Air-coupled laser vibrometry: analysis and applications," Appl. Opt. 48, C33-C37 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-7-C33


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References

  1. P. S. Theocaris and E. E. Gdoutos, Matrix Theory of Photoelasticity (Springer, 1979).
  2. A. Yarif, Optical Electronics (Saunders, 1971).
  3. A. Korpel, Acousto-Optics (Marcel Decker, 1988).
  4. C. C. Williams, “High resolution optical probe,” in Proc.-IEEE Ultrason. Sympos. 1, 951-955(1983).
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  6. L. Zipser, “Refraktovibrometrie zur Messung und Visualisierung akustischer, fluidischer und spannungsmechanischer Phänomene,” http://www.polytec.com/ger/_files/07_Zipser_Refraktovibrometrie.pdf
  7. Polytec Inc., “Vibrometry Basics,” http://www.polytec.com/usa/158_942.asp
  8. L. Zipser and H. Franke, “Laser-scanning vibrometry for ultrasonic transducer development,” Sens. Actuators, A 110, 264-268 (2004). [CrossRef]
  9. I. Solodov and G. Busse, “Nonlinear air-coupled emission: the signature to reveal and image microdamage in solid materials,” Appl. Phys. Lett. A 91, 251910 (2007). [CrossRef]

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