Device for generating a current driver voltage, and laser system

A device for generating a current driver voltage for a current driver of a pump diode, the pump diode for pumping a fibre laser, the device comprising:

• a voltage source for generating the current driver voltage, wherein the voltage source comprises a primary side and a secondary side, wherein the secondary side is electrically isolated from the primary side, wherein the primary side comprises primary circuit breakers, and wherein the secondary side comprises an accumulator for electrical charge, wherein the voltage source is configured to generate the current driver voltage at the accumulator by switching the primary circuit breakers,
• a driver circuit for switching the primary circuit breakers of the voltage source, and
• a discharge circuit configured to receive a discharge trigger voltage and to discharge the accumulator when the discharge trigger voltage assumes a predetermined value or a value range, wherein the driver circuit and the discharge circuit are connected to a common node,
• a DC/DC converter configured to receive a first control voltage and to provide an output voltage at an output of the DC/DC converter based on the first control voltage, and
• a deactivation switch configured to receive a second control voltage and to switch an electrical connection between the output of the DC/DC converter and the common node based on the second control voltage, so that, as the output voltage of the DC/DC converter assumes the predetermined value or the value range of the discharge trigger voltage, the driver circuit switches off the primary circuit breakers of the voltage source simultaneously as the accumulator is discharged.