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The Subaru Seminar is
usually held in Room 104 of the Hilo Base Facility, adjacent
to the main lobby. Everyone is welcome to attend. If you are
interested in giving a seminar, please contact Subaru seminar organizers
(Tae-Soo Pyo, Sherry Yeh, Nagayoshi Ohashi)
by email : sseminar_at_subaru.naoj.org (please change"_at" to @).
September 17, Tuesday, at 11:00 am
" Recent progress of photonic-crystal focal-plane coronagraph masks for direct detection of exoplanets "
Naoshi Murakami
(Hokkaido University/JPL)
Photonic crystal, artificial periodic nanostructure of high and low
refractive indices, is an attracting device for manufacturing focal-plane
coronagraph masks. We have been developing an eight-octant phase
mask (8OPM) and vector vortex mask based on the photonic-crystal
technology. In this seminar, I will present laboratory demonstrations of
the photonic-crystal coronagraph masks aimed at direct imaging of Earth-like
exoplanets. In addition, I will also present our recent activities
for installing the 8OPM coronagraph into the Subaru Coronagraphic
Extreme AO (SCExAO).