J. Bodzenta, M. Dzida and T. Pustelny
J. Phys. IV France 137 (2006) 185-188
Acousto-optic imaging by means of wide angle tunable acousto-optic filterK.B. Yushkov, D.V. Bogomolov and V.B. Voloshinov
Faculty of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory, 119992 Moscow, Russia
(Published online 23 December 2006)
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.
© EDP Sciences 2006