A·P·E has developed a custom set of products for frequency shifting, and modification of laser beam intensity. Elevated control and simplicity are standard across the range.
The acousto-optical modulator modifies the intensity of the laser beam. For example, it is used as an acousto-optical chopper for lock-In detection systems. Its advantage over mechanical choppers is a higher modulation frequency. Besides, it does not generate mechanical vibration which can have negative effects on the signal detection as it does not contain flexible parts. In analog operation the laser intensities can be adjusted at will and time modulated.