acousto - optical device.

摘要

P the invention relates to the modulation of a light beam. The device comprises a generator of the acoustic wave and a substance acousto - optical device which contains a compound polyphenyl, sterically congested, with an attenuation coefficient of the sound, measured at 25°C, less than about 10 db / cm for a frequency of 40 mhz. / p & & p & application to the production of devices acousto - optics comprising an acoustic transducer which is associated with the substance acousto -. & / p