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9 July 2018 Photonics-based mid-infrared interferometry: 4-year results of the ALSI project and future prospects
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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.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lucas Labadie, Stefano Minardi, Jan Tepper, Romina Diener, Balaji Muthusubramanian, Jörg-Uwe Pott, Stefan Nolte, Simon Gross, Alexander Arriola, and Michael J. Withford "Photonics-based mid-infrared interferometry: 4-year results of the ALSI project and future prospects", Proc. SPIE 10701, Optical and Infrared Interferometry and Imaging VI, 107011R (9 July 2018); doi: 10.1117/12.2312930; https://doi.org/10.1117/12.2312930
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