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Thin-film filter wavelength-stabilized, grating combined, high-brightness kW-class direct diode laser

Haas, Matthias and Rauch, Simon and Nagel, Simon and Irmler, Lukas and Dekorsy, Thomas and Zimer, Hagen (2017) Thin-film filter wavelength-stabilized, grating combined, high-brightness kW-class direct diode laser. Optics Express, 25 (15), pp. 17657-17670. Optical Society of America. doi: 10.1364/OE.25.017657. ISSN 1094-4087.

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Official URL: http://dx.doi.org/10.1364/OE.25.017657


We report on kW-class dense wavelength beam combining of a laser diode module consisting of ten broad-area laser diode bars by using a novel multi-laser cavity approach based on a thin-film filter (TFF) as a dispersive optical element. The wavelength-stabilized output of the TFF cavity is beam combined upon a -1st order transmission grating. Hereby, a cylindrical telescope is used for linear dispersion-matching between the TFF and the combiner grating. On the basis of simulations of the resulting beam quality deterioration, we are able to optimize the cavity and the combiner setup for optimal beam quality preservation. We demonstrate a highly efi�cient direct diode laser with 1.1-kW output power and a symmetrical beam parameter product of about 6mm � mrad (95% power content) in both beam axes.

Item URL in elib:https://elib.dlr.de/113266/
Document Type:Article
Title:Thin-film filter wavelength-stabilized, grating combined, high-brightness kW-class direct diode laser
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Haas, Matthiastrumpf laser gmbh, schramberg, germanyhttps://orcid.org/0000-0003-2375-4326
Rauch, Simontrumpf laser gmbh, schramberg, germanyUNSPECIFIED
Nagel, Simontrumpf laser gmbh, schramberg, germanyUNSPECIFIED
Irmler, Lukastrumpf laser gmbh, schramberg, germanyUNSPECIFIED
Dekorsy, Thomasinstitute of technical physics, dlrhttps://orcid.org/0000-0003-2257-2854
Zimer, HagenTRUMPF Photonics Inc., 2601 Route 130 South, Cranbury, NJ 08512, USAUNSPECIFIED
Date:13 July 2017
Journal or Publication Title:Optics Express
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1364/OE.25.017657
Page Range:pp. 17657-17670
Publisher:Optical Society of America
Keywords:high power diode laser, coherent beam combining, beam quality
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology (old)
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Dekorsy, Prof. Dr. Thomas
Deposited On:17 Jul 2017 10:49
Last Modified:19 Nov 2021 20:43

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