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Optical Engineering

Experimental demonstration of the holographic incoherent-erasure joint-transform correlator
Author(s): George Asimellis; Jehad Khoury; Charles L. Woods
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Paper Abstract

We report the first experimental realization of the incoherenterasure joint-transform correlator operating on the erasure nonlinearities of degenerate four-wave mixing in a real-time holographic medium. Our experiment used the joint-transform spectrum produced on a shorterwavelength laser beam to erase a longer-wavelength four-wave mixing hologram in Bi12GeO20. We demonstrate a transition from matched-filter correlation to phase-extraction correlation by increasing the erasure beam intensity, in quantitative agreement with the weak-coupling photorefractive model and simulation results.

Paper Details

Date Published: 1 September 1997
PDF: 8 pages
Opt. Eng. 36(9) doi: 10.1117/1.601493
Published in: Optical Engineering Volume 36, Issue 9
Show Author Affiliations
George Asimellis, Tufts Univ. (United States)
Jehad Khoury, Tufts Univ. (United States)
Charles L. Woods, Rome Lab. (United States)

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