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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 19 — Sep. 17, 2007
  • pp: 12189–12196

Polarization degree analysis of objective spectrum in polarization differential stellar coronagraph

N. Zubko, N. Baba, S. Morisaki, and N. Murakami  »View Author Affiliations

Optics Express, Vol. 15, Issue 19, pp. 12189-12196 (2007)

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It is shown that the degree of polarization analysis is useful to find objective spectra of exoplanets immersed in noisy stellar spectra. We report the laboratory experiment of polarization differential objective spectroscopy with a four-quadrant polarization mask coronagraph, where partially polarized planetary signal is expected to be discerned from unpolarized stellar noise. The detection of the planet signal is impeded by the stellar noise remained after subtracting mutually orthogonally polarized components of light. We distinguish clearly the planetary spectrum by use of the degree of polarization. We also show the refinement of the spectrum of the planet model.

© 2007 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(350.1260) Other areas of optics : Astronomical optics
(350.1270) Other areas of optics : Astronomy and astrophysics

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: July 5, 2007
Revised Manuscript: August 28, 2007
Manuscript Accepted: September 10, 2007
Published: September 11, 2007

N. Zubko, N. Baba, S. Morisaki, and N. Murakami, "Polarization degree analysis of objective spectrum in polarization differential stellar coronagraph," Opt. Express 15, 12189-12196 (2007)

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