Method and laser system for generating output laser pulses with an optical component with temperature-dependent power efficiency and associated computer program product

A laser system for generating output laser pulses from input laser pulses, the laser system comprising:

• a pulse source for providing the input laser pulses having previously known pulse energies and pulse times,
• an optical component with temperature-dependent power efficiency, wherein the input laser pulses pass through the optical component, the optical component is heated by the passing of the input laser pulses, and the input laser pulses emerge from the optical component as output laser pulses,
• a power setting device for setting a respective pulse power of each of the input laser pulses, and
• a control unit programmed to calculate a current temperature or a current temperature difference of the optical component, or a temperature-dependent parameter based on all preceding input laser pulses or output laser pulses that have contributed to the heating of the optical component, and to control the power setting device to set the respective pulse power of a current input laser pulse based on the calculated current temperature, or the calculated current temperature difference, or the calculated current parameter so that an associated output laser pulse has a pulse energy that deviates from a predefined pulse energy by less than 5%.