HIGH POWER FIBER LASER SAFETY CONTROL SYSTEM

摘要

A laser safety control system is configured with a power source module directly coupled to an AC source. The power source module includes a galvanically isolated DC/DC converter, which has at least one output capacitor, and a safety mechanism. The safety mechanism is configured with first and second safety channels which operate independently from one another so as to switch the normal operating regime of the power source module to the safe regime. In the normal operating regime, its DC output has a high voltage, whereas in the safe regime the DC output has a low voltage lower than the high voltage. The safety channels each include a shutdown circuit and a discharging circuit. The shutdown circuit is operative to switch the DC/DC converter off. The discharging circuit is operative to discharge the output capacitor below to the desired. The switching off DC/DC converter and discharging of the output capacitor define the safe regime of the power source module. The laser safety control system further includes a high power fiber laser system and a laser pump system which receives the DC output from the power source and is prevented from radiating emission in the safe regime of the power source because in the safe regime the low voltage is insufficient for generation the laser emission.