Light's Orbital Angular Momentum and Optical Vortices for Astronomical Coronagraphy from Ground and Space Telescopes

Details Light's Orbital Angular Momentum and Optical Vortices for Astronomical Coronagraphy from Ground and Space Telescopes Light's Orbital Angular Momentum and Optical Vortices for Astronomical Coronagraphy from Ground and Space Telescopes

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009em%26p..105..283b&link_type=abstract

Earth, Moon, and Planets, Volume 105, Issue 2-4, pp. 283-288

Computer Science

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2

Light&Rsquo, S Orbital Angular Momentum, Optical Vortices, Coronagraphy

Scientific paper

The properties of optical vortices produced with spiral phase plates have recently found interesting applications in astronomical coronagraphy. Here we review the characteristics of the optical vortex coronagraph. Our simulations show that the intensity of an on-axis star can be fainted by 10 orders of magnitude, thus allowing the detection of close faint sources like extrasolar planets. We also discuss the expected coronagraphic performances achievable with a stepped spiral phase plate.

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