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Proceedings Paper

Photonics-based mid-infrared interferometry: 4-year results of the ALSI project and future prospects
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Paper Abstract

In this contribution, we review the results of the ALSI project (Advanced Laser-writing for Stellar Interferometry), aimed at assessing the potential of ultrafast laser writing to fabricate mid-infared integrated optics (IO) devices with performance compatible with an implementation in real interferometric instruments like Hi5 or PFI. Waveguides for the L, L' and M bands with moderate propagation losses were manufactured in Gallium Lanthanum Sulfide and ZBLAN glasses and used to develop photonic building blocks as well as a full mid-IR 4-telescope beam combiner. We discuss the advantages and disadvantages of the tested combiners and discuss a possible roadmap for the continuation of this work.

Paper Details

Date Published: 9 July 2018
PDF: 16 pages
Proc. SPIE 10701, Optical and Infrared Interferometry and Imaging VI, 107011R (9 July 2018); doi: 10.1117/12.2312930
Show Author Affiliations
Lucas Labadie, Univ. zu Köln (Germany)
Stefano Minardi, Leibniz-Institut für Astrophysik Potsdam (Germany)
Jan Tepper, Univ. zu Köln (Germany)
Romina Diener, Friedrich-Schiller-Univ. Jena (Germany)
Balaji Muthusubramanian, Univ. zu Köln (Germany)
Jörg-Uwe Pott, Max-Planck-Institut für Astronomie (Germany)
Stefan Nolte, Friedrich-Schiller-Univ. Jena (Germany)
Simon Gross, Macquarie Univ. (Australia)
Alexander Arriola, Macquarie Univ. (Australia)
Michael J. Withford, Macquarie Univ. (Australia)

Published in SPIE Proceedings Vol. 10701:
Optical and Infrared Interferometry and Imaging VI
Michelle J. Creech-Eakman; Peter G. Tuthill; Antoine Mérand, Editor(s)

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