High brightness dense wavelength multiplexing laser

US9596034B2 · kind B2 · utility

Assignee

• TRUMPF LASER GMBH · DE

Inventors

• Hagen Zimer · Schramberg, DE
• Alexander Killi · Trossingen, DE
• Christoph Tillkorn · Villingendorf, DE
• Steffen Ried · Herrenberg, DE

Key dates

• Filing date: Jun 3, 2016
• Grant date: Mar 14, 2017
• Expiry date: Jun 3, 2036

Classification

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

Abstract

The present disclosure describes systems and methods for beam wavelength stabilization and output beam combining in dense wavelength multiplexing (DWM) systems. Systems and methods are described for performing beam wavelength stabilization and output beam combining in DWM systems while achieving increased wall-plug efficiency and enhanced beam quality. Interferometric external resonator configurations can be used to greatly increase the brightness of DWM system output beams by stabilizing the wavelengths of the beams emitted by the emitters of the DWM laser source. The resonant cavities described by the present disclosure provide advantages over the prior art in the form of decreased cost, increased wall plug efficiency and increased output beam quality. Particular implementations of the disclosure achieve increased wall plug efficiency and increased output beam quality through a combination of innovative cavity designs and the utilization of reflection diffraction elements for beam combining.