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Proceedings Paper

Lensless spatial filtering using acousto-optic modulators
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Paper Abstract

We review the role of acousto-optic (AO) modulators in programmable real-time image processing. Using one AO cell, 1D high pass filtering and edge enhancement has recently been demonstrated. Two AO cells in tandem can be used to remove asymmetries for using one AO cell. We also show notch filtering characteristics of an AO cell by developing a technique to determine the spatial transfer functions numerically for various cases of beam incidence on an AO modulator. Normal incidence and incidence at twice the Bragg angle are investigated as examples.

Paper Details

Date Published: 11 November 1998
PDF: 10 pages
Proc. SPIE 3581, Acousto-Optics and Applications III, (11 November 1998); doi: 10.1117/12.330508
Show Author Affiliations
Partha P. Banerjee, Univ. of Alabama in Huntsville (United States)
Ting-Chung Poon, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 3581:
Acousto-Optics and Applications III

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