Optical delay module for lenghtening the propagation path of a light beam and pulse multiplication or elongation module

US7486707B2 · kind B2 · utility

Assignee

• Carl Zeiss Laser Optics GmbH · DE

Inventors

• Alois Herkommer · Aalen, DE
• Holger Muenz · Aalen, DE

Key dates

• Filing date: Dec 15, 2004
• Grant date: Feb 3, 2009
• Expiry date: Jun 10, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/7055
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to an optical delay module for lengthening the propagation path of a light beam comprises a first spherical mirror and a second spherical mirror, the first spherical mirror and the second spherical mirror having equal radii of curvature, the first and the second mirror being arranged on a common axis of symmetry with concave sides of the first and second mirrors being situated opposite one another at a distance from one another which corresponds to the radii of curvature of the first and second mirrors. The module also includes a coupling-in area for coupling the light beam into a space between the first and second mirrors and a coupling-out area for coupling the light beam out of the space between the first and second mirrors. The propagation path of the light beam between the coupling-in area and the coupling-out area corresponding at least approximately to quadruple the mirror distance, at least one optical arrangement arranged between the first and second mirrors, the optical arrangement being arranged to transfer the light beam between the first and second mirrors in such a way that the propagation path of the light beam without masking out of beam parts …