J. Phys. IV France
Volume 137, November 2006
Page(s) 185 - 188
Publié en ligne 23 décembre 2006
35th Winter School on Wave and Quantum Acoustics
J. Bodzenta, M. Dzida and T. Pustelny
J. Phys. IV France 137 (2006) 185-188

DOI: 10.1051/jp4:2006137038

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

K.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