@inproceedings{effea136f1f14d77a5fd74bb92012f2b,
title = "Increasing the spectral coverage of interferometric integrated optics: K/L and N-laser-written beam combiners",
abstract = "Integrated optics (IO) has proven to be a competitive solution for beam combination in the context of astronomical interferometry (e.g. GRAVITY at the VLTI). However, conventional silica-based lithographic IO is limited to wavelengths shorter than 2.2μm. We report in this paper the progress on our attempt to extend the operation of IO to longer wavelengths. Previous work has demonstrated the suitability of chalcogenide devices in the MID-IR in the N band and monochromatically at 3.39 μm. Here, we continue this effort with the manufacturing of new laser written GLS IO as beam combiners designed for the astronomical L band and characterized interferometrically at 3.39 μm. In the era of multi-Telescope interferometers, we present a promising solution to strengthen the potential of IO for new wavelength ranges.",
keywords = "Beam Combination, Infrared, Integrated Optics, Interferometry, Laser Writing",
author = "Jan Tepper and Romina Diener and Lucas Labadie and Stefano Minardi and Balaji Muthusubramanian and Pott, {J{\"o}rg Uwe} and Stefan Nolte and Alexander Arriola and Gillian Madden and Debaditya Choudhury and MacPherson, {William Neil} and Thomson, {Robert R.}",
year = "2016",
month = aug,
day = "4",
doi = "10.1117/12.2231394",
language = "English",
isbn = "9781510601932",
series = "Proceedings of SPIE",
publisher = "SPIE",
editor = "Fabien Malbet and Creech-Eakman, {Michelle J.} and Tuthill, {Peter G.}",
booktitle = "Optical and Infrared Interferometry and Imaging V",
address = "United States",
note = "Optical and Infrared Interferometry and Imaging V ; Conference date: 27-06-2016 Through 01-07-2016",
}