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11 November 1998 Lensless spatial filtering using acousto-optic modulators
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Proceedings Volume 3581, Acousto-Optics and Applications III; (1998)
Event: Acousto-Optics and Applications III, 1998, Gdansk-Jurata, Poland
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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Partha P. Banerjee and Ting-Chung Poon "Lensless spatial filtering using acousto-optic modulators", Proc. SPIE 3581, Acousto-Optics and Applications III, (11 November 1998);

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