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Proceedings

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

MPS-Authors

Labadie,  Lucas
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Minardi,  Stefano
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tepper,  Jan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Diener,  Romina
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Muthusubramanian,  Balaji
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pott,  Jörg-Uwe
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nolte,  Stefan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gross,  Simon
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Arriola,  Alexander
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Withford,  Michael J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2018SPIE10701E..1RL
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Citation

Labadie, L., Minardi, S., Tepper, J., Diener, R., Muthusubramanian, B., Pott, J.-U., et al. (2018). Photonics-based mid-infrared interferometry: 4-year results of the ALSI project and future prospects.


Cite as: https://hdl.handle.net/21.11116/0000-0005-CCAA-6
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.