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Optics Letters

Optics Letters


  • Vol. 30, Iss. 17 — Sep. 1, 2005
  • pp: 2224–2226

Common-path achromatic interferometer-coronagraph: nulling of polychromatic light

Alexander V. Tavrov, Yosuke Kobayashi, Yosuke Tanaka, Tatsutoshi Shioda, Yukitoshi Otani, Takashi Kurokawa, and Mitsuo Takeda  »View Author Affiliations

Optics Letters, Vol. 30, Issue 17, pp. 2224-2226 (2005)

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A three-dimensional common-path interferometer is proposed, which can achromatically null out an on-axis source while it maintains the detectability of an off-axis source. A geometric phase in the three-dimensional interferometer introduces an achromatic pi-phase shift to the light from the on-axis source, such that destructive interference nulls out the axial light at one of the ports of the interferometer. Light from the off-axis source, which is exempt from the pi-phase shift, comes out from both ports with equal intensity. The common-path scheme makes the system highly immune to environmental disturbances.

© 2005 Optical Society of America

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

Alexander V. Tavrov, Yosuke Kobayashi, Yosuke Tanaka, Tatsutoshi Shioda, Yukitoshi Otani, Takashi Kurokawa, and Mitsuo Takeda, "Common-path achromatic interferometer-coronagraph: nulling of polychromatic light," Opt. Lett. 30, 2224-2226 (2005)

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