Development of a CELestial Infrared Nuller Experiment (CELINE) for broadband nulling and new single-mode fiber testing

[en] he small angular distance (<100 mas) and the huge flux ratio (107) between an Earth-like exoplanet in the socalled habitable zone and its host star makes it very difficult to direct image such systems. Nulling interferometry consists of a very powerful technique that combines destructively the light from two or more collectors to dim the starlight and to reveal faint companions in its vicinity. We have developed a new nulling experiment based on the fiber nuller principle. This fully symmetric reflective nulling bench aims at testing broadband nulling in both H and K bands as well as characterizing photonic fibers for modal filtering. We present in this paper the design, the development as well as preliminary results of the experiment.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Hanot, Charles ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)

Riaud, Pierre

Mawet, Dimitri

Absil, Olivier ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)

Surdej, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)

Habraken, Serge ; Université de Liège - ULiège > Département de physique > Optique - Hololab - CSL (Centre Spatial de Liège)

Language :

English

Title :

Development of a CELestial Infrared Nuller Experiment (CELINE) for broadband nulling and new single-mode fiber testing

Publication date :

July 2010

Event name :

Astronomical Telescopes and Instrumentation 2010: Optical and Infrared Interferometry II

Event organizer :

SPIE

Event place :

San Diego, United States - California

Event date :

27/06/2010 - 2/07/2010

Audience :

International

Main work title :

Optical and Infrared Interferometry II

Editor :

Danchi, W. C.

Delpancke, F.

Rajagopal, J. K.

Publisher :

SPIE, Bellingham, United States - Washington

Collection name :

Proceedings of the SPIE, volume 7734

Pages :

2L.1-2L.9

Additional URL :

http://dx.doi.org/10.1117/12.856843

Available on ORBi :

since 13 January 2011

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Bibliography

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