3.9 Article Proceedings Paper

The optical vortex coronagraph

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Publisher

IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/11/9/094022

Keywords

optical vortex; coronagraph; Fourier; Hankel; Lyot; exoplanet; Bessel functions

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An optical vortex coronagraph is a high contrast imaging system which has the potential to completely extinguish light from an on-axis point source, allowing glare-free, high throughput imaging of off-axis targets. An important application is the direct detection of exoplanets orbiting distant stars. The optical physics of the OVC is reviewed, a heuristic argument describing its operation is presented for the first time, and performance limitations are explored.

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