Spatial filtering for the Large Interferometer For Exoplanets (LIFE) mission

Michael J. Ireland; Stephen Madden; Ludovic Rapp

doi:10.1117/12.3020673

28 August 2024 Spatial filtering for the Large Interferometer For Exoplanets (LIFE) mission

Michael J. Ireland, Stephen Madden, Ludovic Rapp

Author Affiliations +

Proceedings Volume 13095, Optical and Infrared Interferometry and Imaging IX; 130951E (2024) https://doi.org/10.1117/12.3020673
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

Infrared nulling interferometry in space is the most promising technique for detecting possible signs of life on earth-like exoplanets, through the combination of ozone and other biomarkers. The Large Interferometer for Exoplanets (LIFE) mission extends on earlier work by Darwin and Terrestrial Planet Finder Interferometer (TPF-I) with a modern mission concept. In this paper, we describe why spatial filtering is critical in the context of both adaptive nulling and alternative approaches in order to achieve the ∼10⁷ contrast needed, and why a endlessly single mode photonics crystal waveguide fed by phase induced amplitude apodization optics is the currently preferred option for LIFE. Finally, we discuss the considered technological options and prototyping for production of such a waveguide spatial filter at different wavelengths, including both fibres and laser micromachining of infrared crystals.

Conference Presentation

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

Citation Download Citation

Michael J. Ireland, Stephen Madden, and Ludovic Rapp "Spatial filtering for the Large Interferometer For Exoplanets (LIFE) mission", Proc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 130951E (28 August 2024); https://doi.org/10.1117/12.3020673

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