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Active local oscillator power stabilization for a hot electron bolometer heterodyne receiver

Hayton, D. J. and Gao, J. R. and Kooi, J. W. and Ren, Y. and Zhang, W. and de Lange, G. (2012) Active local oscillator power stabilization for a hot electron bolometer heterodyne receiver. In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI. Proceedings of SPIE. No.8452. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, 84520Z. ISBN 978-0-8194-9153-4. https://resolver.caltech.edu/CaltechAUTHORS:20161027-074427859

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Abstract

We report on the application of a new technique for actively stabilizing the power of a far infrared gas laser as the local oscillator (LO) in a superconducting hot electron bolometer (HEB) heterodyne receiver system at 2.5 THz. The technique utilizes PID feedback control of the local oscillator intensity by means of a voice-coil based swing arm actuator placed in the beam path. The HEB itself is used as a direct detector to measure incident LO power whilst simultaneously continuing to function as heterodyne mixer. Results presented here demonstrate a factor of 50 improvement in the measured total power and spectroscopic Allan variance time. Allan times of 30 seconds and 25 seconds respectively are shown for large and small area HEB's with a measured effective noise fluctuation bandwidth of 12 MHz. The technique is versatile and can be applied to any LO source and at any LO frequency.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.925851DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1362973PublisherArticle
ORCID:
AuthorORCID
Kooi, J. W.0000-0002-6610-0384
Additional Information:© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). We acknowledge T.M. Klapwijk for his helpful discussions, M. Hajenius for fabricating the HEBs, L. de Jong for his technical support and G. Gol’tsman’s group at MSPU for provision of NbN films. The work was supported by NWO, KNAW China Exchange Programme, the AMSTAR+ of RadioNet under FP7, and NATO SfP.
Funders:
Funding AgencyGrant Number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Koninklijke Nederlandse Akademie van Wetenschappen (KNAW)UNSPECIFIED
AMSTARUNSPECIFIED
North Atlantic Treaty Organization (NATO)UNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
Subject Keywords:Hot electron bolometer, Allan variance, terahertz, stability, heterodyne
Series Name:Proceedings of SPIE
Issue or Number:8452
DOI:10.1117/12.925851
Record Number:CaltechAUTHORS:20161027-074427859
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20161027-074427859
Official Citation:D. J. Hayton ; J. R. Gao ; J. W. Kooi ; Y. Ren ; W. Zhang ; G. de Lange; Active local oscillator power stabilization for a hot electron bolometer heterodyne receiver. Proc. SPIE 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, 84520Z (September 24, 2012); doi:10.1117/12.925851.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71526
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:27 Oct 2016 16:22
Last Modified:11 Nov 2021 04:46

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