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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 34, Iss. 11 — Apr. 10, 1995
  • pp: 1827–1840

In-line recording and off-axis viewing technique for holographic particle velocimetry

Hui Meng and Fazle Hussain  »View Author Affiliations


Applied Optics, Vol. 34, Issue 11, pp. 1827-1840 (1995)
http://dx.doi.org/10.1364/AO.34.001827


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Abstract

Prior approaches (e.g., off-axis holography) to overcoming the limitations of in-line holography for particle fields, namely, intrinsic speckle noise and depth resolution, involved an increased complexity of the optical system. The in-line recording and off-axis viewing (IROV) technique employs a single laser beam to record an in-line hologram, which is then viewed off axis during reconstruction. The signal-to-noise ratio and depth resolution of IROV are higher than conventional in-line holography by an order of magnitude and are comparable with off-axis holography. IROV is a much simpler approach than off-axis holography and is highly promising for holographic particle velocimetry. Measurements of the three-dimensional flow velocity field of a vortex ring obtained by an IROV-based holographic particle velocimetry system are presented.

© 1995 Optical Society of America

History
Original Manuscript: March 18, 1994
Revised Manuscript: July 28, 1994
Published: April 10, 1995

Citation
Hui Meng and Fazle Hussain, "In-line recording and off-axis viewing technique for holographic particle velocimetry," Appl. Opt. 34, 1827-1840 (1995)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-34-11-1827

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