Acousto-Optic Devices Based on Potassium Rare-Earth Tungstates Laser Crystals

We present a family of original acousto-optical devices. They are based on new acousto-optical materials KRE(WO4)2, where RE = Y, Gd, Yb, Lu. A combination of features such as radiation resistance, optical biaxiality and appreciable acousto-optical gure of merit, makes possible creation of polarization-insensitive modulator with almost 100% of di raction e ciency. The de ector with wide angular aperture and broad range of de ection, and collinear tunable lter are also suggested.