ALOHA @3,39 μm : Implementation of the up-conversion interferometer in the L band

Ludovic Szemendera; Pascaline Darré; Ludovic Grossard; Laurent Delage; Harald Herrmann; Christine Silberhorn; François Reynaud

doi:10.1117/12.2232295

19 August 2016 ALOHA @3,39 μm: implementation of the up-conversion interferometer in the L band

Ludovic Szemendera, Pascaline Darré, Ludovic Grossard, Laurent Delage, Harald Herrmann, Christine Silberhorn, François Reynaud

Author Affiliations +

Proceedings Volume 9907, Optical and Infrared Interferometry and Imaging V; 990732 (2016) https://doi.org/10.1117/12.2232295
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

In the aim of access the high angular resolution for mid infrared observations, our team propose to include non linear processes on each arm of an interferometer. This project called ALOHA is now adapted for the L band detection, specially at 3.39 μm. Our team has previously published the first contrast measured in laboratory with such an up-conversion interferometer. The fringe contrast we measured was closed to the theoretical maximum at 100%. In a second step, we investigated the stability of the instrument over several months. The residual drifts are mainly due to the non real-time photometry monitoring.

Citation Download Citation

Ludovic Szemendera, Pascaline Darré, Ludovic Grossard, Laurent Delage, Harald Herrmann, Christine Silberhorn, and François Reynaud "ALOHA @3,39 μm: implementation of the up-conversion interferometer in the L band", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 990732 (19 August 2016); https://doi.org/10.1117/12.2232295

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