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Applied Optics

Applied Optics

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

Optics InfoBase > Applied Optics > Volume 46 > Issue 32 > Page 7817

Stable deep nulling in polychromatic unpolarized light with multiaxial beam combination

Christophe Buisset, Xavier Rejeaunier, Yves Rabbia, and Marc Barillot

Applied Optics, Vol. 46, Issue 32, pp. 7817-7822        doi:10.1364/AO.46.007817

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  • 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

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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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. We report on 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

» View Full Text: Acrobat PDF (509 KB)

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

References

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Author Affiliations

Christophe Buisset, Yves Rabbia

Département Gemini

Xavier Rejeaunier, Marc Barillot

Thales Alenia Space

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