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Phase-Apodized-Pupil Lyot Coronagraphs for Arbitrary Telescope Pupils
- Source :
- The Astrophysical Journal, 888(2), 127
- Publication Year :
- 2019
- Publisher :
- arXiv, 2019.
-
Abstract
- The phase-apodized-pupil Lyot coronagraph (PAPLC) is a pairing of the apodized-pupil Lyot coronagraph (APLC) and the apodizing phase plate (APP) coronagraph. We describe a numerical optimization method to obtain globally-optimal solutions for the phase apodizers for arbitrary telescope pupils, based on the linear map between complex-amplitude transmission of the apodizer and the electric field in the post-coronagraphic focal plane. PAPLCs with annular focal-plane masks and point-symmetric dark zones perform analogous to their corresponding APLCs. However with a knife-edge focal-plane mask and one-sided dark zones, the PAPLC yields inner working angles as close as $1.4\lambda/D$ at contrasts of $10^{-10}$ and maximum post-coronagraphic throughput of >75% for telescope apertures with central obscurations of up to 30%. We present knife-edge PAPLC designs optimized for the VLT/SPHERE instrument and the LUVOIR-A aperture. These designs show that the knife-edge PAPLC retains its performance, even for realistic telescope pupils with struts, segments and non-circular outer edges.<br />Comment: 16 pages, 11 figures, accepted for publication in ApJ
- Subjects :
- 010504 meteorology & atmospheric sciences
Aperture
Phase (waves)
FOS: Physical sciences
01 natural sciences
law.invention
Telescope
Optics
Apodization
law
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
010303 astronomy & astrophysics
Coronagraph
Instrumentation and Methods for Astrophysics (astro-ph.IM)
0105 earth and related environmental sciences
Physics
Earth and Planetary Astrophysics (astro-ph.EP)
business.industry
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy and Astrophysics
Linear map
Cardinal point
Transmission (telecommunications)
Space and Planetary Science
Astrophysics::Earth and Planetary Astrophysics
Astrophysics - Instrumentation and Methods for Astrophysics
business
Astrophysics - Earth and Planetary Astrophysics
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- The Astrophysical Journal, 888(2), 127
- Accession number :
- edsair.doi.dedup.....be75084b47f7978710a67344e483e51d
- Full Text :
- https://doi.org/10.48550/arxiv.1908.02585