DEVICE FOR CONTROLLING LIGHT IMPULSES BY A PROGRAMMABLE ACOUSTO-OPTIC MEANS

摘要

This acousto-optic device comprises an elasto-optic medium (1) with an acoustic transducer (2) capable of generating in the elasto-optic medium an acoustic wave modulated along a predetermined direction, and means for coupling in the elasto-optic medium a polarised incident optical wave (Si). The device has a programming circuit (6) for modulating the acoustic wave. This device can be inserted in a laser system. It then receives a polarised extended optical impulse to be amplified and supplies an extended optical impulse. An optical amplifier amplifies the extended optical impulse and an optical compressing device compresses the amplified extended optical impulse. The effects of the chain dispersal can be compensated by programming the acousto-optic device.