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Laser-controlled adaptive optics for beam quality improvements in a multi-pass thin-disk amplifier

Lange, Richard and Kolbe, Daniel (2018) Laser-controlled adaptive optics for beam quality improvements in a multi-pass thin-disk amplifier. Optics Letters, 43 (14), pp. 3453-3456. Optical Society of America. DOI: 10.1364/OL.43.003453 ISSN 0146-9592

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Official URL: https://doi.org/10.1364/OL.43.003453

Abstract

We devise a laser-controlled adaptive optical element that operates intracavity under high-intensity radiation. This element substitutes a conventional mechanically deformable mirror and is free of critical heat-sensitive components and electronics. The deformation mechanism is based on the projection of a continuous-wave control laser onto a specially designed mirror. Mounted to a water-cooled heat sink, the mirror can handle laser radiation beyond 3  MW/cm^2. The properties of the adaptive optical element, including the maximum correctable wavefront pitch of 800 nm, are discussed. The successful implementation in a multi-pass thin-disk amplifier is presented. An improvement of the beam quality by a factor of three is achieved. We identify measures to enhance the performance of the adaptive optics towards efficient operation in a high-power laser system.

Item URL in elib:https://elib.dlr.de/122479/
Document Type:Article
Title:Laser-controlled adaptive optics for beam quality improvements in a multi-pass thin-disk amplifier
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lange, RichardUNSPECIFIEDUNSPECIFIED
Kolbe, Danieldaniel.kolbe (at) dlr.deUNSPECIFIED
Date:2018
Journal or Publication Title:Optics Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:43
DOI :10.1364/OL.43.003453
Page Range:pp. 3453-3456
Publisher:Optical Society of America
ISSN:0146-9592
Status:Published
Keywords:Adaptive Optics, High Power Laser, Multipass Amplifier
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, L - Military Technologies
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Kolbe, Daniel
Deposited On:12 Nov 2018 10:24
Last Modified:12 Nov 2018 10:24

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