Gratis mitigation allows simultaneous reduction of multiple non-interfering intensity components from polarization aberrations via correlated DM responses, demonstrated in Lyot coronagraph end-to-end simulations.
Polarization Effects in Reflecting Coronagraphs for White Light Applications in Astronomy
1 Pith paper cite this work. Polarity classification is still indexing.
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abstract
The properties of metal thin films have been largely overlooked in discussions of the technical limitations and problems that arise in the field of direct detection of exoplanets. Here, polarization properties and anisotropy properties of highly reflecting thin metal films are examined within the context of the requirements for the ultra-low scattered-light system performance of coronagraphs applied to space and ground-based high-contrast, white-light astronomy. Wavelength-dependent optical constants for highly reflecting thin metal films, taken from the literature are used to calculate the polarization-dependent transmissivity of a typical coronagraph. The effects of degraded performance on the astronomical science are examined. Suggestions are made for future work.
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astro-ph.IM 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Gratis Mitigation of Polarization Aberration Effects in Coronagraphic Dark Holes
Gratis mitigation allows simultaneous reduction of multiple non-interfering intensity components from polarization aberrations via correlated DM responses, demonstrated in Lyot coronagraph end-to-end simulations.