Location: N245/Conference room 215
“Progress and Prospects of Shaped Pupil Coronagraphy and Wavefront Control at Princeton”
The High Contrast Imaging Lab at Princeton University has been investigating shaped pupils for high contrast exoplanet imaging for over 10 years. We have a fully equipped optical bench with two deformable mirrors for performing amplitude and phase correction of the wavefront (we are currently the only lab to be using two DMs for correction). In this talk I present an overview of our shaped pupil design process, the performance expectations, and our laboratory results from the last few years demonstrating two-sided dark holes in both mono- and polychromatic light. I'll also discuss some of the limitations of shaped pupils and the directions we are exploring for further performance enhancement, including our new 2-dimensional shaped pupil designs and their implementation using reflective pupils. Finally, I'll review our current designs and approaches for the AFTA coronagraph that could be implemented on a forthcoming WFIRST 2.4m mission.