Laser amplification system

US6577666B2 · kind B2 · utility

Assignee

• Universitaet Stuttgart Institut fuer Strahlwerkzeuge · DE

Inventors

• Steffen Erhard · Traunreut, DE
• Adolf Giesen · Renningen, DE
• Martin Karszewski · Renningen, DE
• Christian Stewen · Marbach, DE
• Andreas Voss · Essen, DE

Key dates

• Filing date: Feb 2, 2001
• Grant date: Jun 10, 2003
• Expiry date: Oct 10, 2021

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/09415
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In order to improve a laser amplification system, comprising a solid-state body having a laser-active medium, a pumping radiation source for generating a pumping radiation field which passes through the solid-state body several times, an optical pumping radiation imaging means which is arranged between the pumping radiation source and the solid-state body and focuses a leg of the pumping radiation field entering the solid-state body onto the solid-state body and at least one optical refocusing means which focuses a leg of the pumping radiation field exiting from the solid-state body onto the solid-state body again in the form of a leg entering the solid-state body and different to the outgoing leg, in such a manner that as high a pumping radiation power density as possible can be generated in the solid-state body with as little resources as possible it is suggested that the optical refocusing means reshape the leg exiting from the solid-state body into an intermediately collimated leg and reshape the intermediately collimated leg again into the leg entering the solid-state body again and focused onto it.