Physics – Optics
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6265e..37l&link_type=abstract
Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter. Edited by Mather, John C.; MacEwen, Howard A.; de Gr
Physics
Optics
1
Scientific paper
We describe the advantages of a nulling coronagraph instrument behind a single aperture space telescope for detection and spectroscopy of Earth-like extrasolar planets in visible light. Our concept synthesizes a nulling interferometer by shearing the telescope pupil into multiple beams. They are recombined with a pseudo-achromatic pi-phase shift in one arm to produce a deep null on-axis, attenuating the starlight, while simultaneously transmitting the off-axis planet light. Our nulling configuration includes methods to mitigate stellar leakage, such as spatial filtering by a coherent array of single mode fibers, balancing amplitude and phase with a segmented deformable mirror, and post-starlight suppression wavefront sensing and control. With diffraction limited telescope optics and similar quality components in the optical train (λ/20), suppression of the starlight to 10-10 is readily achievable. We describe key features of the architecture and analysis, present the status of key experiments to demonstrate wide bandwidth null depth, and present the status of component technology development.
Aguayo Francisco
Bifano Thomas
Fregoso Santos F.
Green Joseph J.
Lane Benjamin F.
No associations
LandOfFree
The visible nulling coronagraph: architecture definition and technology development status does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The visible nulling coronagraph: architecture definition and technology development status, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The visible nulling coronagraph: architecture definition and technology development status will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1619086