Laser system

US6157755A · kind A · utility

Assignees

• DEUTSCHES ZENTRUM FÜR LUFT—UND RAUMFAHRT E.V. · DE
• Universitaet Stuttgart Institut fuer Strahlwerkzeuge · DE

Inventors

• Uwe Brauch · Heitersheim, DE
• Hans Opower · Krailling, DE
• Adolf Giesen · Renningen, DE

Key dates

• Filing date: Mar 16, 1998
• Grant date: Dec 5, 2000
• Expiry date: Mar 16, 2018

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/4062
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In order to improve a laser system comprising a fiber bundle consisting of single mode fibers which form with a first end a fiber bundle end, at which a total radiation field, which can be imaged onto a target surface, is formed from laser radiation exiting from the first ends of the fibers, and which are coupled with a second end to a subsystem generating the laser radiation with at least one semiconductor laser, such that this also operates efficiently with semiconductor lasers or semiconductor laser amplifiers and can be realized in an inexpensive manner it is suggested that the subsystem comprise a plurality of semiconductor laser units operating parallel, that all the semiconductor laser units of the subsystem operate with the same wavelength in a phase-balanced manner relative to one another as a result of master laser radiation coupled into them and that individual laser radiation exiting from the individual semiconductor laser units of the respective subsystem be combined by means of a coupling device of the respective subsystem to form a coherent laser radiation field which can be coupled into one of the single mode fibers.