Home › Optical Review

Statistics of dynamic speckles in application to distance measurements

Thu, 2009-04-09 09:14 — Guest
0

Abstract  We present an analysis of statistical properties of dynamic speckles to estimate the limiting accuracy of measurements achievable in a distance sensor using spatially filtered dynamic speckles. The main reason for inaccurate measurements using dynamic speckles is their stochastic nature. It is shown that the average lifetime of dynamic speckles is the key factor defining the measurement accuracy. Main conclusions of the theoretical analysis were confirmed in an experiment carried out with a fast moving rough surface. Special attention is paid to a recently proposed range sensor using dynamic speckles generated by a fast-deflecting laser beam. It is shown that this sensor possesses the best combination of accuracy and response time.
  • Content Type Journal Article
  • Category Regular Papers
  • DOI 10.1007/s10043-009-0027-2
  • Authors
    • Alexei A. Kamshilin, University of Kuopio Department of Physics P.O. Box 1627 FIN-70211 Kuopio Finland
    • Serguei V. Miridonov, Centro de Investigación Científica y de Educación Superior de Ensenada Optics Department C.P. 22860 A.P. 360 Ensenada B.C. Mexico
    • Igor S. Sidorov, University of Kuopio Department of Physics P.O. Box 1627 FIN-70211 Kuopio Finland
    • Dmitry V. Semenov, University of Kuopio Department of Physics P.O. Box 1627 FIN-70211 Kuopio Finland
    • Ervin Nippolainen, University of Kuopio Department of Physics P.O. Box 1627 FIN-70211 Kuopio Finland

Comments

Post new comment

The content of this field is kept private and will not be shown publicly.
CAPTCHA
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
4 + 0 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.