Abstract
Theoretical predictions of the acousto-optic interaction under Raman–Nath conditions of ultrasound and laser light with a beam width comparable to or smaller than the ultrasonic wavelength are experimentally investigated, and good agreement between experiment and prediction is found. The experimental setup consists of a pulsed laser, emitting pulses that are synchronized with the sound frequency by means of a controllable delay time. When , strong focusing is obtained for most delay times. The lensing properties of this configuration are carefully investigated.
© 2003 Optical Society of America
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