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Coherent beam combining of multipass thin-disk lasers with active phase control

Zwilich, Michael and Ewers, Benjamin (2020) Coherent beam combining of multipass thin-disk lasers with active phase control. OSA Continuum, 3 (11), pp. 3176-3186. Optical Society of America. doi: 10.1364/OSAC.404658. ISSN 2578-7519.

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Official URL: https://doi.org/10.1364/OSAC.404658

Abstract

Coherent beam combining and the development of thin-disk lasers have provided the ability to increase the output power of solid-state laser systems. Here, coherent beam combining by active phase control of one multipass thin-disk laser amplifier and one similar multipass setup is demonstrated with powers below 100 mW. Piston phase disturbances are measured via optical heterodyne detection and compensated for by piezo mirrors. For one double pass over the disk, a root mean square phase error of λ/69 was achieved. Mechanical vibrations < 5 kHz inside the multipass setup caused by the water cooling of the disk are the main source of phase noise. Thermal effects by the pumping diodes with 1 kW of optical power are negligible.

Item URL in elib:https://elib.dlr.de/137093/
Document Type:Article
Title:Coherent beam combining of multipass thin-disk lasers with active phase control
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Zwilich, MichaelMichael.Zwilich (at) dlr.deUNSPECIFIED
Ewers, BenjaminBenjamin.Ewers (at) dlr.dehttps://orcid.org/0000-0001-6698-7889
Date:2 November 2020
Journal or Publication Title:OSA Continuum
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:3
DOI :10.1364/OSAC.404658
Page Range:pp. 3176-3186
Publisher:Optical Society of America
ISSN:2578-7519
Status:Published
Keywords:thin-disk laser, coherent beam combining, laser, active phase control
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 > Solid State Lasers and Nonlinear Optics
Deposited By: Ewers, Benjamin
Deposited On:18 Nov 2020 09:44
Last Modified:18 Nov 2020 09:44

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