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Proceedings Paper

Compact 20-pass thin-disk amplifier insensitive to thermal lensing
Author(s): M. Zeyen; A. Antognini; K. Kirch; A. Knecht; M. Marszalek; F. Nez; J. Nuber; R. Pohl; I. Schulthess; L. Sinkunaite
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Paper Abstract

We present a multi-pass amplifier which passively compensates for distortions of the spherical phase front occurring in the active medium. The design is based on the Fourier transform propagation which makes the output beam parameters insensitive to variation of thermal lens effects in the active medium. The realized system allows for 20 reflections on the active medium and delivers a small-signal gain of 30 with M2 = 1.16. Its novel geometry combining Fourier transform propagations with 4f-imaging stages as well as a compact array of adjustable mirrors allows for a layout with a footprint of 400 mm × 1000 mm.

Paper Details

Date Published: 7 March 2019
PDF: 7 pages
Proc. SPIE 10896, Solid State Lasers XXVIII: Technology and Devices, 108960X (7 March 2019); doi: 10.1117/12.2510427
Show Author Affiliations
M. Zeyen, ETH Zurich (Switzerland)
A. Antognini, ETH Zurich (Switzerland)
Paul Scherrer Institut (Switzerland)
K. Kirch, ETH Zurich (Switzerland)
Paul Scherrer Institut (Switzerland)
A. Knecht, Paul Scherrer Institut (Switzerland)
M. Marszalek, Paul Scherrer Institut (Switzerland)
F. Nez, Lab. Kastler Brossel, Sorbonne Univ. (France)
ENS-Univ. PSL (France)
J. Nuber, ETH Zurich (Switzerland)
R. Pohl, Johannes Gutenberg Univ. Mainz (Germany)
I. Schulthess, ETH Zurich (Switzerland)
L. Sinkunaite, ETH Zurich (Switzerland)

Published in SPIE Proceedings Vol. 10896:
Solid State Lasers XXVIII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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