AO Modulator The rise time of the modulator is simply deduced by the necessary time for the acoustic wave to travel through the laser beam. For highest speeds the laser beam will be focused down, forming a beam waist as it
passes through the modulator. shifted by the amount of the RF carrier frequency: it acts like as fixed frequency shifter. By varying the frequency, you can get a variable frequency shifter.
«Beam Drift Optimization» for those applications which need superior beampointing stability. |