Lensless spatial filtering using acousto-optic modulators

Partha P. Banerjee; Ting-Chung Poon

doi:10.1117/12.330508

11 November 1998 Lensless spatial filtering using acousto-optic modulators

Partha P. Banerjee, Ting-Chung Poon

Proceedings Volume 3581, Acousto-Optics and Applications III; (1998) https://doi.org/10.1117/12.330508
Event: Acousto-Optics and Applications III, 1998, Gdansk-Jurata, Poland

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.

Citation Download Citation

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); https://doi.org/10.1117/12.330508

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