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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 35, Iss. 22 — Aug. 1, 1996
  • pp: 4436–4447

Experimental measurement of a time-varying optical path difference by the small-aperture beam technique

Ronald J. Hugo and Eric J. Jumper  »View Author Affiliations


Applied Optics, Vol. 35, Issue 22, pp. 4436-4447 (1996)
http://dx.doi.org/10.1364/AO.35.004436


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Abstract

We discuss the use of time series of the jitter angle of multiple, small-aperture probe beams (the small-aperture beam technique, or SABT) as they emerge from a turbulent, optically active flow-field to quantify the time-varying optical path difference (OPD). The flow field studied is that for the transitionally turbulent region of a two-dimensional heated jet. Techniques to construct a complete time series of instantaneous realizations of the OPD are first applied to a numerically generated flow field and then to an experimental flow field. The SABT sensor’s measurement accuracy is assessed, and its application to flow fields that differ from the numerical heated jet is discussed.

© 1996 Optical Society of America

History
Original Manuscript: September 14, 1995
Published: August 1, 1996

Citation
Ronald J. Hugo and Eric J. Jumper, "Experimental measurement of a time-varying optical path difference by the small-aperture beam technique," Appl. Opt. 35, 4436-4447 (1996)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-35-22-4436

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