Acoustic-optical filtering method and device based on a long acousto-optical interaction

摘要

The method involves generating a transverse acoustic beam. Energy of the acoustic beam is propagated in a co-linear manner with energy of incident optical beam (Oi1) along a path of optical beam in a birefringent acousto-optical crystal (PO1) by a piezo-electric transducer (T1-T3), where the acoustic and optical beams travel a path i.e. collinear interaction zone (Z1), with reflections on one or other of reflecting faces (AB, BC, CD, DE, EA) of the crystal perpendicular to symmetric axes common to acoustic slowness curve and curves of ordinary and extraordinary optic indices of the crystal. An independent claim is also included for a device for implementing a method for acoustic-optical filtering of large acoustic and optical filtering interaction between acoustic and optical waves.