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Proceedings Paper

Concept for fiber-based near-infrared interferometry of highest frequency resolution
Author(s): E. A. Michael; F. Besser; R. Prado; L. Pallanca
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Paper 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.

Paper Details

Date Published: 24 July 2014
PDF: 12 pages
Proc. SPIE 9146, Optical and Infrared Interferometry IV, 914634 (24 July 2014); doi: 10.1117/12.2057203
Show Author Affiliations
E. A. Michael, Univ. de Chile (Chile)
F. Besser, Univ. de Chile (Chile)
R. Prado, Univ. de Chile (Chile)
L. Pallanca, Univ. de Chile (Chile)

Published in SPIE Proceedings Vol. 9146:
Optical and Infrared Interferometry IV
Jayadev K. Rajagopal; Michelle J. Creech-Eakman; Fabien Malbet, Editor(s)

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