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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 35 — Dec. 10, 2010
  • pp: 6675–6688

Midinfrared broadband achromatic astronomical beam combiner for nulling interferometry

Hsien-kai Hsiao, Kim A. Winick, and John D. Monnier  »View Author Affiliations

Applied Optics, Vol. 49, Issue 35, pp. 6675-6688 (2010)

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Integrated optic beam combiners offer many advantages over conventional bulk optic implementations for astronomical imaging. To our knowledge, integrated optic beam combiners have only been demonstrated at operating wavelengths below 4 μm . Operation in the midinfrared wavelength region, however, is highly desirable. In this paper, a theoretical design technique based on three coupled waveguides is developed to achieve fully achromatic, broadband, polarization-insensitive, lossless beam combining. This design may make it possible to achieve the very deep broadband nulls needed for exoplanet searching.

© 2010 Optical Society of America

OCIS Codes
(130.3060) Integrated optics : Infrared
(130.3120) Integrated optics : Integrated optics devices
(350.1260) Other areas of optics : Astronomical optics
(110.3175) Imaging systems : Interferometric imaging
(120.6168) Instrumentation, measurement, and metrology : Speckle interferometry, stellar

ToC Category:
Imaging Systems

Original Manuscript: August 16, 2010
Manuscript Accepted: September 25, 2010
Published: December 1, 2010

Hsien-kai Hsiao, Kim A. Winick, and John D. Monnier, "Midinfrared broadband achromatic astronomical beam combiner for nulling interferometry," Appl. Opt. 49, 6675-6688 (2010)

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