Unstable laser resonator

US4491950A · kind A · utility

Assignee

• Deutsche Forschungs- und Versuchsanstalt fur Luft- und Raumfahrt e.V. · DE

Inventor

• Peter Hoffmann · Korschenbroich, DE

Key dates

• Filing date: Dec 10, 1981
• Grant date: Jan 1, 1985
• Expiry date: Dec 10, 2001

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/0818
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An unstable laser resonator having two spherical mirrors for producing a collimated output beam with rotationally unsymmetrical magnification characterized by the inclusion between the two spherical mirrors of at least two other optical elements with cylindrical surfaces and wherein the cylindrical axes of said cylindrical surfaces are essentially perpendicular to each other. These other two optical elements may be mirrors or lenses.