A Frustrated Total Reflection Filter for the Infra-Red
JOSA, Vol. 39, Issue 12, pp. 978-982 (1949)
http://dx.doi.org/10.1364/JOSA.39.000978
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Abstract
The Frustrated Total Reflection filter is a transmission band pass filter. It can be constructed for any part of the spectrum for which there exist transparent materials of different indices of refraction. Measurements are shown of a filter which was designed for the rocksalt infra-red region. This filter has two oppositely polarized pass bands which, at a particular angle of incidence, are at 4½ and 5 microns, respectively. Both the pass bands are approximately 1/10 of a micron wide. They can be shifted over a range of approximately half a micron by tilting the filter.
Citation
B. H. BILLINGS and M. A. PITTMAN, "A Frustrated Total Reflection Filter for the Infra-Red," J. Opt. Soc. Am. 39, 978-982 (1949)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-39-12-978
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