Astrophotonics: the visible path forward in interferometry

Elsa Huby

doi:10.1117/12.3029486

28 August 2024 Astrophotonics: the visible path forward in interferometry

Elsa Huby

Proceedings Volume 13095, Optical and Infrared Interferometry and Imaging IX; 130951M (2024) https://doi.org/10.1117/12.3029486
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

While the angular resolution is the obvious driver for pushing instruments in the visible wavelength range, working with short wavelengths comes with challenges. In this presentation I will review the latest developments regarding photonic developments for the recombination of beams in the visible. Photonic devices constitute a promising avenue for the future instrumentation in interferometry, offering compact, stable and potentially complex architectures. Especially in the context of the spectro-interferometer FIRST installed on the SCExAO platform at the Subaru Telescope, we are exploring two different manufacturing technologies producing waveguides with low or high refractive index contrast. I will review the main challenges we are facing, regarding insertion and propagation losses, as well as polarization effects, and introduce current research developments towards visible design for active phase modulation devices, 3D-architectures and photonic lanterns.

Conference Presentation

Citation Download Citation

Elsa Huby "Astrophotonics: the visible path forward in interferometry", Proc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 130951M (28 August 2024); https://doi.org/10.1117/12.3029486

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