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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 32 — Nov. 10, 2007
  • pp: 7817–7822

Stable deep nulling in polychromatic unpolarized light with multiaxial beam combination

Christophe Buisset, Xavier Rejeaunier, Yves Rabbia, and Marc Barillot  »View Author Affiliations


Applied Optics, Vol. 46, Issue 32, pp. 7817-7822 (2007)
http://dx.doi.org/10.1364/AO.46.007817


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Abstract

In the context of the space-based nulling mission ESA-Darwin, Thales Alenia Space has developed a nulling breadboard for the European Space Agency (ESA): the multiaperture imaging interferometer (MAII) to demonstrate deep and stable nulling and to investigate various subsystems of the ESA-Darwin interferometer. Recently, we have extended our investigations to the multiaxial beam combination. This combination scheme presents many advantages: simplicity, compactness, and a high coupling efficiency for a three-beam combination. The near-infrared ( λ 1.55   μm ) MAII breadboard has been upgraded to the multiaxial beam combination. Polarization and stability issues have been thoroughly investigated. Wereporton the recent results we have obtained with the multiaxial configuration of MAII in unpolarized light with a relative spectral bandwidth of 5%: nulling ratios of mean value N = 1.7 × 10 5 , stable over 1 h with a standard deviation σ N = 5.7 × 10 7 . These results indicate that the multiaxial beam combination has the potential to meet Darwin requirements.

© 2007 Optical Society of America

OCIS Codes
(110.5100) Imaging systems : Phased-array imaging systems
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(350.1260) Other areas of optics : Astronomical optics
(350.4600) Other areas of optics : Optical engineering

ToC Category:
Interferometry

History
Original Manuscript: July 17, 2007
Manuscript Accepted: August 20, 2007
Published: November 1, 2007

Citation
Christophe Buisset, Xavier Rejeaunier, Yves Rabbia, and Marc Barillot, "Stable deep nulling in polychromatic unpolarized light with multiaxial beam combination," Appl. Opt. 46, 7817-7822 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-32-7817


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References

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