Photonics-based mid-infrared interferometry: 4-year results of the ALSI project and future prospects
Instrumentation and Methods for Astrophysics
2020-03-06 v1
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.
Keywords
Cite
@article{arxiv.2003.02582,
title = {Photonics-based mid-infrared interferometry: 4-year results of the ALSI project and future prospects},
author = {L. Labadie and S. Minardi and J. Tepper and R. Diener and B. Muthusubramanian and J. -U. Pott and S. Nolte and S. Gross and A. Arriola and M. J. Withford},
journal= {arXiv preprint arXiv:2003.02582},
year = {2020}
}
Comments
16 pages, 9 figures, 1 table