A kilo-pixel imaging system for future space based far-infrared observatories using microwave kinetic inductance detectors

摘要

spectrum will require very large arrays of ultra-sensitive detectors in combination with high multiplexing factors and e�cient lownoiseudand low-power readout systems. We have developed a demonstrator system suitable for such applications.udMethods. The system combines a 961 pixel imaging array based upon Microwave Kinetic Inductance Detectors (MKIDs) with audreadout system capable of reading out all pixels simultaneously with only one readout cable pair and a single cryogenic amplifier. Weudevaluate, in a representative environment, the system performance in terms of sensitivity, dynamic range, optical e�ciency, cosmicudray rejection, pixel-pixel crosstalk and overall yield at an observation centre frequency of 850 GHz and 20% fractional bandwidth.udResults. The overall system has an excellent sensitivity, with an average detector sensitivity hNEPdeti = 3 � 10