%0 Journal Article
%T Antenna-coupled infrared detectors for imaging applications
%A Gonzalez, F. J.
%A Ilic, B.
%A Alda, J.
%A Boreman, G. D.
%J IEEE J. Sel. Topics Quantum Electron.
%D 2005
%V 11
%N 1
%F Gonzalez_etal2005
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=741), last updated on Sun, 22 May 2016 16:41:08 -0500
%X Infrared focal plane arrays (IRFPAs) are a critical component in advanced infrared imaging systems. IRFPAs are made up of two parts, a detector array and a readout integrated circuit (ROIC) multiplexer. Current ROIC technology has typical pitch sizes of 20×20 to 50×50 μm2. In order to make antenna-coupled detectors suited for infrared imaging systems, two-dimensional (2-D) arrays have been fabricated that cover a whole pixel area with the penalty of increasing the noise figure of the detector and, therefore, reducing its performance. By coupling a Fresnel zone plate lens to a single element antenna-coupled detector, infrared radiation can be collected over a typical pixel area and still keep low-noise levels. A Fresnel zone plate lens coupled to a single-element square-spiral-coupled infrared detector has been fabricated and its performance compared to single element antenna-coupled detectors and 2-D arrays of antenna coupled detectors. Measurements made at 10.6 μm showed a two-order-of-magnitude increase in SNR and a ~× increase in D* as compared to 2-D arrays of antenna-coupled detectors.
%K optical antennas
%P 117-120