Probability density function and detection threshold in high contrast imaging with partially polarized light

Details Probability density function and detection threshold in high contrast imaging with partially polarized light Probability density function and detection threshold in high contrast imaging with partially polarized light

2009-06-05

arxiv.org/abs/0906.1060v1

Opt.Lett.34:1720-1722,2009

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

8 pages, 3 figures

Scientific paper

10.1364/OL.34.001720

We obtain an expression for the probability density function (PDF) of partially developed speckles formed by light with an arbitrary degree of polarization. From the probability density we calculate the detection threshold corresponding to the 5sigma confidence level of a normal distribution. We show that unpolarized light has an advantage in high contrast imaging for low ratios of the deterministic part of the point spread function (DL PSF) to the halo, typical in coronagraphy.

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