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1 2007

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Acousto-optic imaging by means of wide angle tunable acousto-optic filter

Yushkov K. B., Bogomolov D. V., Voloshinov V. B.

Molecular and Quantum Acoustics

2007

Vol. 28

299-304

The paper is devoted to investigation of wide angle acousto-optic tunable filters, which provide a high rate filtration from infrared to near-ultraviolet range of optical wavelengths with good spectral resolution. The factors decreasing quality of processed images were studied. The research proved that tuning of a filtered wavelength by the wide angle AOTF is accompanied by a defocusing of the processed image in whole. Consideration of this effect in order to compensate the disadvantage resulted in a sufficient enhancement of the image sharpness over the wide range of the filtered optical wavelengths. Spectral measurement of a leaf and analysis of a banknote were carried out in order to demonstrate the operation capability of the instrument.