Vector Vortex Coronagraph technology developments for space-based and ground-based telescopes: status update, and recent test results


D. Mawet, G. Serabyn, J. Trauger, D. Moody, J. Krist, K. Liewer, D. Shemo, N. Tabirian


JPL - Caltech


JPL has been incubating the vector vortex coronagraph (VVC) for 3 years, and took it from a theoretical concept to a fully functional device available for immediate use behind existing telescopes. We chose to exploit the liquid crystal polymer (LCP) technology to render the VVC phase ramp, successfully so far. After reaching a series of important milestones, such as 1e-7 raw contrasts and the imaging of exoplanets from the ground, we are now working on pushing the envelope of the LCP technology to meet specific needs for future large ground-based telescopes and small space-based telescopes, respectively. Those needs include better contrast performance, and achromaticity, as well as immunity against central obscuration and low-order aberrations. I will report on the status of those developments and up-to-date lab results in the near-infrared and visible on JPL’s high contrast imaging testbeds.

Attached documents

Lyot2010proc s8 poster MawetD 1.pdf
PDF, 3.5 Mb