Biomedical subjects

Gregory Foo

Publications and source records attributed to Gregory Foo.

2 recordsLinked to original sources

PubMed2006

Experimental verification of an optical vortex coronagraph.

A coronagraph designed for high contrast imaging applications has been experimentally tested using coherent laser light and a vortex mask of topological charge m=2. Intensity contrast values of 95% were achieved in this first verification of the scheme. Improvements for approaching the theoretical value of 100% are suggested.

Journal Article↗

PubMed2005

Optical vortex coronagraph.

We describe a method to observe dim exoplanets that eliminates light from the parent star across the entire exit pupil without sacrificing light from the planet by use of a vortex mask of topological charge m = 2.

Journal Article↗