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Proceedings Paper

Dynamic coherent beam combining based on a setup of microlens arrays
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Paper Abstract

A novel optical concept is introduced with standard components for highly efficient coherent beam combining a system of (N x N) beams. In a proof-of-principle experiment a well-defined setup with microlens arrays (MLAs) is used to create a beam matrix of 5 x 5 beams. For the combination step the same setup is employed, and the created 25 beams are combined. A combination efficiency above 90% is achieved. Furthermore, the concept allows for dynamic beam combination, i.e., the resulting number of beams and corresponding positions can be controlled by the absolute phases of the array of input beams. A proof-of-principle experiment shows excellent agreement with the model.

Paper Details

Date Published: 2 March 2020
PDF: 12 pages
Proc. SPIE 11266, Laser Resonators, Microresonators, and Beam Control XXII, 1126612 (2 March 2020); doi: 10.1117/12.2547303
Show Author Affiliations
Maike Prossotowicz, TRUMPF Laser GmbH (Germany)
Andreas Heimes, TRUMPF Laser- und Systemtechnik GmbH (Germany)
Daniel Flamm, TRUMPF Laser- und Systemtechnik GmbH (Germany)
Florian Jansen, TRUMPF Laser GmbH (Germany)
Hans-Jürgen Otto, TRUMPF Laser GmbH (Germany)
Aleksander Budnicki, TRUMPF Laser GmbH (Germany)
Uwe Morgner, Leibniz Univ. Hannover (Germany)
Alexander Killi, TRUMPF Laser GmbH (Germany)

Published in SPIE Proceedings Vol. 11266:
Laser Resonators, Microresonators, and Beam Control XXII
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko; Andrea M. Armani, Editor(s)

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