The R390XX-YYDMZZZ-SC is a low to medium power radio frequency generator in a compact, OEM package. The driver supplies an RF signal to an acousto-optic Q-Switch, typically in an Nd:YAG laser. The Q-Switch, when excited, deflects a large portion of the laser light off the optical axis of the laser cavity spoiling the gain in the cavity and allowing the energy to be stored in the upper state of the gain media. When the RF is turned off, typically in 50ns, the Q-Switch becomes transparent and a light pulse is output from the laser.

The RF driver has two digital modulation inputs: Fixed and Variable. These controls allow the customer to issue a pulse command of a "Fixed" pulse width, the duration determined by the driver pulse width control, settable by the customer, or issue a "Variable" pulse command, the duration determined by the input signal pulse width. The RF driver may be modulated in "Fixed" duration mode at any frequency from 1 Hz to 500 kHz by an external frequency source. In "Variable" duration mode, the RF driver can be modulated from DC to 500 kHz. The RF energy can be modulated off in a short period of time (50 ns typical). The RF Driver can produce up to 24 watts output into a 50 ohm load. The R390XX-YYDSZZZ-SC driver is factory configured for RF Frequency, Power, and Control Options when ordered. The R in the model number indicates that this product is compliant with the EU Directive 2002/95/EC for Reduction of Hazardous Substance.