Methods and laser systems for generating amplified pulse-on-demand output laser pulses

US11735884B2 · kind B2 · utility

Assignee

• TRUMPF LASER GMBH · DE

Inventors

• Rainer Flaig · Eschbronn, DE
• Stefan Rapp · Schramberg, DE
• Fred Stier · Schramberg, DE

Key dates

• Filing date: Jul 17, 2020
• Grant date: Aug 22, 2023
• Expiry date: Apr 21, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/2391
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Methods and laser systems are disclosed for generating amplified output laser pulses with individually specified pulse energies and/or pulse shapes at individually specified time points at an output by providing a first pulse sequence of input laser pulses with a same pulse energy and a same temporal pulse distance smaller than a temporal pulse distance between adjacent output laser pulses, selecting input laser pulses arriving at the output at or close to the specified time points to form a second pulse sequence of input laser pulses, coupling at least one sacrificial laser pulse (energy balance or temporal balance) into the second pulse sequence, amplifying the second pulse sequence of input laser pulses with the sacrificial laser pulse, and coupling out the amplified sacrificial laser pulse from the amplified second pulse sequence upstream of the output to obtain the amplified output laser pulses.