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

US11942752B2 · kind B2 · utility

Assignee

• TRUMPF LASER GMBH · DE

Inventors

• Jonathan Brons · Oberndorf, DE
• Rainer Flaig · Eschbronn, DE
• Dirk Sutter · Mountain View, US
• Ivo Zawischa · Gundelfingen, DE

Key dates

• Filing date: Aug 11, 2023
• Grant date: Mar 26, 2024
• Expiry date: Aug 11, 2043

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/1302
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A method for generating output laser pulses from input laser pulses includes causing the input laser pulses to temporally successively pass through an optical component with temperature-dependent power efficiency. The optical component is heated by the passing of the input laser pulses. The input laser pulses emerge from the optical component as output laser pulses. The method further includes calculating a current temperature or a current temperature difference of the optical component, or a temperature-dependent current parameter based on all preceding input laser pulses or output laser pulses that have contributed to the heating of the optical component, and setting a 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%.