2020
DOI: 10.3847/1538-4357/ab3857
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Phase-apodized-pupil Lyot Coronagraphs for Arbitrary Telescope Pupils

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 an… Show more

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Cited by 19 publications
(17 citation statements)
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“…These redundant pupils were used in a second step as a starting point to design APLCs: Each of these redundant apodizers was set as the input of a second optimization instead of the original GMT-like pupil. This optimization problem was solved by generating the apodizer from the input pupil (or from the redundant apodizer in our case) that maximizes the transmission for a given contrast in a defined dark zone in the coronagraphic image for given FPM and Lyot stop geometries Por 2020). We also used linear programming methods to determine our solution using a Gurobi solver.…”
Section: Coronagraph Designsmentioning
confidence: 99%
“…These redundant pupils were used in a second step as a starting point to design APLCs: Each of these redundant apodizers was set as the input of a second optimization instead of the original GMT-like pupil. This optimization problem was solved by generating the apodizer from the input pupil (or from the redundant apodizer in our case) that maximizes the transmission for a given contrast in a defined dark zone in the coronagraphic image for given FPM and Lyot stop geometries Por 2020). We also used linear programming methods to determine our solution using a Gurobi solver.…”
Section: Coronagraph Designsmentioning
confidence: 99%
“…While this derivation is always true in the most common case of a symmetrical DH, there are coronagraph designs that produce half-sided DHs. 67 We can show that the quadratic dependency of the contrast on the phase perturbations remains true in this most general case. We rewrite Eq.…”
Section: Matrix Formalism To Calculate the Average Dark Hole Contrastmentioning
confidence: 72%
“…While this derivation is always true in the most common case of a symmetrical DH, there are coronagraph designs that produce half-sided dark holes. 67 We can show that the quadratic dependency of the contrast on the phase perturbations remains true in this most general case. We rewrite Eq.…”
Section: Matrix Formalism To Calculate the Average Dark Hole Contrastmentioning
confidence: 72%