Low loss optical integrated waveguides operating in a broad mid-infrared range

Miguel Montesinos-Ballester; Adrian M. Glauser; Lucius Miller; Emilio Gini; Jérôme Faist; Sascha P. Quanz

doi:10.1117/12.3018416

26 August 2024 Low loss optical integrated waveguides operating in a broad mid-infrared range

Miguel Montesinos-Ballester, Adrian M. Glauser, Lucius Miller, Emilio Gini, Jérôme Faist, Sascha P. Quanz

Author Affiliations +

Proceedings Volume 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI; 131006O (2024) https://doi.org/10.1117/12.3018416
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Photonic materials suitable for the mid-infrared wavelength range are in high demand for future astronomical instruments, particularly for space missions like the Large Interferometer For Exoplanets (LIFE). In this work, we have developed a high-performance photonic integrated platform with the potential to operate in the entire wavelength range required by the LIFE mission (6-16 μm; goal: 4–18.5 μm). Buried InGaAs waveguides with InP cladding are used, with wet-etch fabrication patterning and Fe doping incorporation during material growth. Thanks to these approaches, the first experimental results demonstrate remarkably low propagation losses below 2.5 dB/cm at 9.5 wavelengths in both TE and TM polarization modes. The achieved results of this new platform are the starting point for more complex photonic devices including nulling beam-combiners among other astronomical applications.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Miguel Montesinos-Ballester, Adrian M. Glauser, Lucius Miller, Emilio Gini, Jérôme Faist, and Sascha P. Quanz "Low loss optical integrated waveguides operating in a broad mid-infrared range", Proc. SPIE 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI, 131006O (26 August 2024); https://doi.org/10.1117/12.3018416

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