Concept for fiber-based near-infrared interferometry of highest frequency resolution

E. A. Michael; F. Besser; R. Prado; L. Pallanca

doi:10.1117/12.2057203

24 July 2014 Concept for fiber-based near-infrared interferometry of highest frequency resolution

E. A. Michael, F. Besser, R. Prado, L. Pallanca

Proceedings Volume 9146, Optical and Infrared Interferometry IV; 914634 (2014) https://doi.org/10.1117/12.2057203
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

We are presenting first experimental results for subsystems of a low-cost near-infrared heterodyne interferometer concept based on commercial 1.55μm fiber-components with relative phase-stabilization between both telescopes, a shot noise limited heterodyne scheme with ambient temperature operated photodiodes, an ultra-coherent fiber laser, and a ROACH-based correlator. After we worked on a first demonstration with two 14” amateur telescopes on Betelgeuse, the concept should be upgradable to connect mid- or large-class telescopes, also given that the employed fiber phase stabilization scheme will enable the operation of long baselines.

Citation Download Citation

E. A. Michael, F. Besser, R. Prado, and L. Pallanca "Concept for fiber-based near-infrared interferometry of highest frequency resolution", Proc. SPIE 9146, Optical and Infrared Interferometry IV, 914634 (24 July 2014); https://doi.org/10.1117/12.2057203

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