Optical amplifier arrangement for a solid state laser

US6654163B1 · kind B1 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Keming Du · Aachen, DE
• Peter Loosen · Stolberg, DE
• Reinhart Poprawe · Aachen, DE

Key dates

• Filing date: Apr 18, 2002
• Grant date: Nov 25, 2003
• Expiry date: Apr 18, 2022

Classification

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

Abstract

An optical amplifier arrangement, including an amplifying medium, which exhibits an approximately rectangular cross section with a long edge and a short edge, as well as at least two highly reflecting mirrors, between which the amplifying medium is disposed, whereby the long or the short edge of the cross section is along the X axis or the Y axis; the Z axis is the optical axis; and the X, Y and Z axis form a rectangular coordinate system. The mirrors are designed and arranged in such a manner that one beam, which is to be amplified and beamed in by an oscillator, passes repeatedly through the amplifying medium in the XZ plane and is amplified; and the size of the beam to be amplified in the X direction becomes larger after each passage.