Journal
OPTICS LETTERS
Volume 30, Issue 8, Pages 914-916Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.30.000914
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A thin-film optical filter used as a one-dimensional spatial filter is presented, and its design is briefly examined. The filter consists of a stack of quarter-wave dielectric layers upon a right-angle prism that selectively cancel a reflected or transmitted plane-wave front for various angles of incidence. Transmittance and reflectance are low-pass functions or high-pass functions of the angle of incidence with a high degree of steepness. In combination, these filters exhibit bandpass transmittance with a variable bandwidth. Applications to detection of extrasolar planets are briefly discussed. (c) 2005 Optical Society of America.
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