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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 27 — Sep. 20, 2008
  • pp: 4915–4926

Achromatic interfero-coronagraph with two common-path interferometers in tandem

Alexander V. Tavrov, Jun Nishikawa, Motohide Tamura, Lyu Abe, Kaito Yokochi, Takashi Kurokawa, and Mitsuo Takeda  »View Author Affiliations

Applied Optics, Vol. 47, Issue 27, pp. 4915-4926 (2008)

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To attain deeper nulling for an extended incoherent star disk a scheme for an achromatic interfero-coronagraph, incorporating two common-path interferometers in tandem, is proposed. Analytical and numerical predictions of the performance, which are in reasonably good agreement, are presented. The predicted performance improvement, by using two interferometers in tandem, is demonstrated by a preliminary experiment. A star coronagraph based on the proposed technique has the possibility to reach a 10 10 achromatic nulling contrast for an almost 10 2 λ / D effective source size.

© 2008 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(260.3160) Physical optics : Interference
(260.5430) Physical optics : Polarization

ToC Category:
Physical Optics

Original Manuscript: March 27, 2008
Revised Manuscript: July 24, 2008
Manuscript Accepted: August 7, 2008
Published: September 16, 2008

Alexander V. Tavrov, Jun Nishikawa, Motohide Tamura, Lyu Abe, Kaito Yokochi, Takashi Kurokawa, and Mitsuo Takeda, "Achromatic interfero-coronagraph with two common-path interferometers in tandem," Appl. Opt. 47, 4915-4926 (2008)

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