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arXiv · 1405.5426

3D-integrated beam combiner for optical spectro-interferometry

Stefano Minardi·Allar Saviauk·Felix Dreisow·Stefan Nolte·Thomas Pertsch
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Abstract

We present a compact setup based on a three-dimensional integrated optical component, allowing the mea- surement of spectrally resolved complex-visibilities for three channels of polychromatic light. We have tested a prototype of the component in R band and showed that accurate complex visibilities could be retrieved over a bandwidth of 50 nm centered at 650 nm (resolution: R=130). Closure phase stability in the order of $λ$/60 was achieved implying that the device could be used for spectro-interferometry imaging.

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Stefano Minardi, Allar Saviauk, Felix Dreisow, Stefan Nolte, Thomas Pertsch. 2014-05-21. 3D-integrated beam combiner for optical spectro-interferometry. https://doi.org/10.1117/12.2054880

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