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Readout for large arrays of Microwave Kinetic Inductance Detectors using a Fast Fourier Transform Spectrometer

  • Microwave Kinetic Inductance Detectors have great potential for large very sensitive detector arrays for use in, for example, ground and spaced based sub?mm imaging. Being intrinsically readout in the frequency domain, they are particularly suited for frequency domain multiplexing allowing 1000s of devices to be readout with one pair of coaxial cables. However, this moves the complexity of the detector from the cryogenics to the warm electronics. We present the use of a readout based on a Fast Fourier transform Spectrometer, showing no deterioration of the noise performance compared to low noise analog mixing while allowing high multiplexing ratios (>100). We present use of this technique to multiplex 44 MKIDs, while this and similar setups are regularly now being used in our array development. This development will help the realization of large cameras, particularly in the short term for ground based astronomy.

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Document Type:Conference Object
Author:S. J. C. Yates, J. J. A. Baselmans, A. M. Baryshev, Y. J. Y. Lankwarden, L. Swenson, A. Monfardini, B. Klein, R. Güsten
Parent Title (English):Young, Cabrera et al. (Eds.): The Thirteenth International Workshop on Low Temperature Detectors - LTD 13. Stanford, California, 20-24 July 2009
First Page:249
Last Page:252
Publisher:AIP Publishing
Date of first publication:2009/12/16
Tag:Electrical noise; Noise; Photoconductors; bolometers; cryogenics; other low-temperature equipment; refrigerators low-temperature detectors; shielding equipment
Departments, institutes and facilities:Fachbereich Elektrotechnik, Maschinenbau, Technikjournalismus
Dewey Decimal Classification (DDC):5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften
Entry in this database:2015/10/09