Radio frequency signals, typically in the tens to hundreds of megahertz range, used to control optical modulators, Q-switches, and mode-lockers. By applying an RF signal to a crystal, engineers create an acoustic standing wave or an oscillating electric field that alters the refractive index, allowing rapid switching or modulation of a laser beam.
Check the RF driver on the acousto-optic modulator, we might be getting impedance mismatch heating up the cable.
Related terms
Acoustooptics
The study and application of light interacting with sound waves in a medium.
Q-switching
Producing short, intense laser pulses by holding cavity losses high while energy builds up, then suddenly dropping them.
Pockels cell
An electro-optic crystal that changes a beam's polarization when high voltage is applied, used as a fast optical switch.