Physics – Optics
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apopt..20...31s&link_type=abstract
Applied Optics, vol. 20, Jan. 1, 1981, p. 31-39. Research supported by the Science Research Council of England and NASA.
Physics
Optics
17
Far Infrared Radiation, Galileo Project, Infrared Filters, Jupiter Project, Spacecraft Instruments, Electromagnetic Interference, Sulfides, Thin Films
Scientific paper
Progress in the development of FIR multilayer interference filters for the net flux radiometer and photopolarizing radiometer to be carried on board the Galileo mission to Jupiter is reported. The multilayer interference technique has been extended to the region above 40 microns by the use of PbTe/II-VI materials in hard-coated combination, with the thickest layers composed of CdSe QWOT at 74 microns and PbTe QWOT. Improvements have also been obtained in filters below 20 microns on the basis of the Chebyshev stack design. A composite filter cutting on steeply at 40 microns has been designed which employs a thin crystal quartz substrate, shorter wavelength absorption in ZnS and As2S3 thin films, and supplementary multilayer interference. Finally, absorptive filters have been developed based on II-VI compounds in multilayer combination with KRS-5 (or 6) on a KRS-5 (or 6) substrate
Hunneman Roger
Seeley J. S.
Whatley A.
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