Physics
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010spie.7731e.153g&link_type=abstract
Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave. Edited by Oschmann, Jacobus M., Jr.; Clampin
Physics
Scientific paper
Detection and Characterization of extrasolar terrestrial planets using coronagraphic techniques requires wavefront control algorithms to relax tolerances in a space-based observatory. To minimize the time spent correcting aberrations, the algorithms must function in broadband light. Two deformable mirrors in series can correct for both amplitude and phase aberrations. By taking a linear approximation of the propagation between the deformable mirrors we show an approach for broadband correction given a monochromatic estimate. We present progress in monochromatic light, initial experiments for broadband wavefront correction. We also address the additional challenges for a broadband controller such as limitations due to aberrations from spatial frequency folding that exhibit a wavelength squared dependence, which requires a third deformable mirror to correct in broadband. From these results we also discuss controllability of spatial frequencies and show its consequences for both monochromatic and broadband correction when using two deformable mirrors in series.
Carlotti Alexis
Groff Tyler D.
Kasdin Jeremy N.
No associations
LandOfFree
Progress on broadband control and deformable mirror tolerances in a 2-DM system 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 Progress on broadband control and deformable mirror tolerances in a 2-DM system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progress on broadband control and deformable mirror tolerances in a 2-DM system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1374568