Laser pump arrangement and laser pump method with beam homogenization

US8750344B2 · kind B2 · utility

Assignee

• HIGH Q LASER GMBH · AT

Inventors

• Daniel Kopf · Altach, AT
• Maximilian Josef Lederer · Alberschwende, AT

Key dates

• Filing date: Nov 6, 2009
• Grant date: Jun 10, 2014
• Expiry date: Jul 22, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/4012
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In a laser pump arrangement for a laser medium that amplifies a laser beam, comprising at least one laser pump source (1″) with a plurality of emitters for generating partial pumping streams (TPS1″, TPS2″), the partial pumping streams (TPS1″, TPS2″) are led through a coupling optic to a homogenizer (3″) and then are thoroughly mixed in one axis through multiple reflections. In the process, the homogenizer (3″) and the laser medium are designed and disposed such that the pump stream exiting the homogenizer (3″) is led directly onto or into the laser medium while maintaining divergence in the mixing axis (DA), wherein the partial pumping streams (TPS1″, TPS2″) are projected, in particular focused, directly onto or into the laser medium in a projection axis (PA) that is perpendicular to the mixing axis (DA).