Title :
Multispectral terahertz camera
Author :
Grossman, E.N. ; Dietlein, C.R. ; Leivo, M. ; Rautiainen, A. ; Luukanen, A.
Author_Institution :
Optoelectron. Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
We describe a broadband terahertz camera based on a modular 64-element linear array of superconducting hot-spot microbolometers. Unlike many superconducting sensor arrays, the readout for this array is performed entirely by uncooled electronics; no SQUIDs or cryogenic HEMTs are employed. The operating principles for the microbolometer and the readout scheme are described and compared with those of similar superconducting sensors. The camera´s design has been optimized for standoff detection, at 8 m range, of objects concealed on the person of individuals. Real-time operation is meant to eliminate the need for individuals being screened to remain stationary, or to cooperate in any other way with the screening operation.
Keywords :
bolometers; image sensors; microwave photonics; superconducting arrays; terahertz wave imaging; broadband multispectral terahertz camera design; modular 64-element linear array; readout scheme; real-time operation; screening operation; superconducting hot-spot microbolometer; uncooled electronics; Antenna measurements; Assembly systems; Cameras; Computer displays; Dielectric substrates; Mirrors; Optical filters; Optical sensors; Sensor arrays; Structural beams;
Conference_Titel :
Electromagnetics in Advanced Applications, 2009. ICEAA '09. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-3385-8
Electronic_ISBN :
978-1-4244-3386-5
DOI :
10.1109/ICEAA.2009.5297810
