Physics – Optics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005oexpr..1310055b&link_type=abstract
Optics Express, vol. 13, Issue 25, p.10055
Physics
Optics
3
Scientific paper
The four-quadrant phase mask (FQPM) is an exciting new approach to coronagraphy, a classic astronomical technique for detecting faint companions very close to bright stars. Starlight rejection is potentially very high, and inner working distances are substantially smaller than those achieved with classical Lyot coronagraphy. The key component of the original FQPM scheme is a transparent mask divided into quadrants delivering relative phase shifts alternately 0/π/0/π, inserted in an intermediate focal plane of the telescope. Monochromatic masks of this kind have been successfully demonstrated in laboratory and telescope tests. Fabrication of masks with achromatic π phase shifts is challenging but of great interest for optimum astronomical sensitivity. In this paper I present a novel concept for achromatic FQPM operation that utilizes intrinsic phase relationships between transmitted and reflected beams in a dielectric beam splitter.
No associations
LandOfFree
Achromatic four-quadrant phase mask (FQPM) coronagraphy using natural beam splitter phase shifts 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 Achromatic four-quadrant phase mask (FQPM) coronagraphy using natural beam splitter phase shifts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Achromatic four-quadrant phase mask (FQPM) coronagraphy using natural beam splitter phase shifts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1466390