Thin-film spatial filters
Optics Letters, Vol. 30, Issue 8, pp. 914-916 (2005)
http://dx.doi.org/10.1364/OL.30.000914
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Abstract
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.
© 2005 Optical Society of America
OCIS Codes
(070.6110) Fourier optics and signal processing : Spatial filtering
(120.2440) Instrumentation, measurement, and metrology : Filters
(230.4170) Optical devices : Multilayers
(310.0310) Thin films : Thin films
Citation
Ivan Moreno, J. Jesus Araiza, and Maximino Avendano-Alejo, "Thin-film spatial filters," Opt. Lett. 30, 914-916 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-8-914
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