US 11,942,752 B2
Method and laser system for generating output laser pulses with an optical component with temperature-dependent power efficiency and associated computer program product
Jonathan Brons, Oberndorf (DE); Rainer Flaig, Eschbronn (DE); Dirk Sutter, Rottweil (DE); and Ivo Zawischa, Gundelfingen (DE)
Assigned to TRUMPF LASER GMBH, Schramberg (DE)
Filed by TRUMPF Laser GmbH, Schramberg (DE)
Filed on Aug. 11, 2023, as Appl. No. 18/448,217.
Application 18/448,217 is a continuation of application No. PCT/EP2021/087158, filed on Dec. 21, 2021.
Claims priority of application No. 10 2021 201 493.3 (DE), filed on Feb. 17, 2021.
Prior Publication US 2023/0387640 A1, Nov. 30, 2023
Int. Cl. H01S 3/00 (2006.01); H01S 3/10 (2006.01); H01S 3/13 (2006.01)
CPC H01S 3/0092 (2013.01) [H01S 3/0085 (2013.01); H01S 3/10015 (2013.01); H01S 3/1302 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for generating output laser pulses from input laser pulses having previously known pulse energies and pulse spacings, the method comprising:
causing the input laser pulses to temporally successively pass through an optical component with temperature-dependent power efficiency, the optical component being heated by the passing of the input laser pulses, and the input laser pulses emerging from the optical component as output laser pulses for setting a respective pulse power component of the output laser pulses,
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%.