Computer Science – Performance
Scientific paper
Aug 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4721..196s&link_type=abstract
Proc. SPIE Vol. 4721, p. 196-203, Infrared Detectors and Focal Plane Arrays VII, Eustace L. Dereniak; Robert E. Sampson; Eds.
Computer Science
Performance
Scientific paper
Multicolor focal plane arrays are of interest for a variety of applications. We report on a method to create a multicolor detector array of high-performance arsenic-doped silicon Blocked-Impurity-Band (BIB) detectors by using diffractive microlenses. Advantage is taken of the strong chromatic aberration characteristic of diffractive lenses to direct light within a pixel to either a central detector or to second detector concentrically disposed around the first. A theoretical calculation of the efficacy of this approach for spectral separation is presented. Fabrication of diffractive microlenses on the backside (illuminated-side) of thinned specially-designed BIB detector arrays is described. Finally, early initial results and further development plans are discussed.
Atkins Ernest W.
Stapelbroek Maryn G.
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