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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 36 — Dec. 20, 2013
  • pp: 8661–8669

Defining parametric dependencies for the correct interpretation of speckle dynamics in photon Doppler velocimetry

Erik A. Moro, Matthew E. Briggs, and Lawrence M. Hull  »View Author Affiliations


Applied Optics, Vol. 52, Issue 36, pp. 8661-8669 (2013)
http://dx.doi.org/10.1364/AO.52.008661


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Abstract

Laser speckle dynamics manifest themselves in photon Doppler velocimetry (PDV) data as low-frequency amplitude fluctuations, and analysis of these fluctuations provides insight into the transverse speed of the surface under observation. We previously demonstrated that a single measurement probe is capable of simultaneously measuring (1) axial motion, through frequency analysis of Doppler shifts, and (2) transverse speed, through analysis of the speckle’s coherence time. However, the performance of this technique hinges on a correct understanding of the speckle pattern’s response to surface motion. In this paper, we model the origination of the speckle pattern, and we describe a methodology for calculating the speckle’s coherence time from the autocorrelation of a noisy signal. We then test a suite of optical probes over a range of standoff distances, demonstrating a significant reduction in the speckle’s coherence time, which correlates to the increase in speckle boiling when the target surface is located near a probe’s focal length. We show that spatial regions of decreased coherence time may be predicted a priori by a probe’s parameters, since they stem from boiling dominance. We analyze this result as a function of probe parameters for a surface-scattering target and a volume-scattering target. Although the coherence time’s behavior in the focal plane makes velocity extraction difficult, far from the probe’s focal lengths, we are able to measure rigid body transverse speeds exceeding 20m/s with an absolute accuracy of ±15% using the speckle dynamics measured by a PDV setup.

© 2013 Optical Society of America

OCIS Codes
(030.6600) Coherence and statistical optics : Statistical optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.7250) Instrumentation, measurement, and metrology : Velocimetry

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: October 15, 2013
Manuscript Accepted: November 8, 2013
Published: December 12, 2013

Virtual Issues
Vol. 9, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Erik A. Moro, Matthew E. Briggs, and Lawrence M. Hull, "Defining parametric dependencies for the correct interpretation of speckle dynamics in photon Doppler velocimetry," Appl. Opt. 52, 8661-8669 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-36-8661


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References

  1. O. T. Strand, D. R. Goosman, C. Martinez, T. L. Whitworth, and W. W. Kuhlow, “Compact system for high-speed velocimetry using heterodyne techniques,” Rev. Sci. Instrum. 77, 083108 (2006). [CrossRef]
  2. B. J. Jenson, D. B. Holtkamp, P. A. Rigg, and D. H. Dolan, “Accuracy limits and window corrections for photon Doppler velocimetry,” J. Appl. Phys. 101, 013523 (2007). [CrossRef]
  3. M. E. Briggs, L. G. Hill, L. M. Hull, M. A. Shinas, and D. H. Dolan, “Applications and principles of photon-Doppler velocimetry for explosive testing,” in Proceedings of 14th International Detonation Symposium, Coeur d’Alene, Idaho (2010).
  4. D. H. Dolan, “What does ‘velocity’ interferometry really measure?” AIP Conf. Proc. 1195, 589–594 (2009). [CrossRef]
  5. E. A. Moro and M. E. Briggs, “Note: simultaneous measurement of transverse speed and axial velocity from a single optical beam,” Rev. Sci. Instrum. 84, 016110 (2013). [CrossRef]
  6. J. W. Goodman, “Origins and manifestations of speckle,” in Speckle Phenomena in Optics, 1st ed. (Roberts and Company, 2007), Chap. 1, pp. 1–6.
  7. T. Iwai, N. Takai, and T. Asakura, “Dynamic statistical properties of laser speckle produced by a moving diffuse object under illumination of a Gaussian laser beam,” J. Opt. Soc. Am. 72, 460–467 (1982). [CrossRef]
  8. N. Takai, I. Iwai, and T. Asakura, “Correlation distance of dynamic speckles,” Appl. Opt. 22, 170–177 (1983). [CrossRef]
  9. A. F. Fercher, “Velocity measurement by first order statistics of time-differentiated laser speckles,” Opt. Commun. 33, 129–135 (1980). [CrossRef]
  10. J. D. Briers, “Laser Doppler and time-varying speckle: a reconciliation,” J. Opt. Soc. Am. A 13, 345–350 (1996). [CrossRef]
  11. P. Beckmann and A. Spizzichino, The Scattering of Electromagnetic Waves from Rough Surfaces (Macmillan, 1963).
  12. J. W. Goodman, “Higher-order statistical properties of speckle,” in Speckle Phenomena in Optics, 1st ed. (Roberts and Company, 2007), Chap. 4, pp. 59–140.
  13. M. Kowalczyk, “Laser speckle velocimetry,” Proc. SPIE 2729, 139–145 (1996). [CrossRef]
  14. L. G. Shirley, E. D. Ariel, G. R. Hallerman, H. C. Payson, and J. R. Vivilecchia, “Advanced techniques for target discrimination using laser speckle,” Lincoln Lab. J. 5, 367–440 (1992).
  15. H. J. Tiziani, “Physical properties of speckles” in Speckle Metrology (Academic, 1978), Chap. 2, pp. 5–9.
  16. J. W. Goodman, “Speckle in certain imaging applications,” in Speckle Phenomena in Optics, 1st ed. (Roberts and Company, 2007), Chap. 6, pp. 187–234.
  17. E. A. Moro, M. E. Briggs, and L. M. Hull, “A comparison of techniques for extracting transverse speed from photon Doppler velocimetry signal content,” in Proceedings of IEEE Sensors, Baltimore, Maryland (2013).
  18. A. V. Oppenheim, R. W. Schafer, and J. R. Buck, “Discrete Hilbert transforms,” in Discrete-Time Signal Processing (Prentice-Hall, 1999), Chap. 11, pp. 775–810.
  19. H. Fuji, T. Okamoto, and T. Asakura, “Power spectra of speckle signals detected by optical-fiber probe,” J. Opt. Soc. Am. A 4, 1366–1375 (1987). [CrossRef]

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