Print Email Facebook Twitter Hot electron bolometer heterodyne receiver with a 4.7-THz quantum cascade laser as a local oscillator Title Hot electron bolometer heterodyne receiver with a 4.7-THz quantum cascade laser as a local oscillator Author Kloosterman, J.L. Hayton, D.J. Ren, Y. Kao, T.Y. Hovenier, J.N. Gao, J.R. Klapwijk, T.M. Hu, Q. Walker, C.K. Reno, J.L. Faculty Applied Sciences Department QN/Quantum Nanoscience Date 2013-01-09 Abstract We report on a heterodyne receiver designed to observe the astrophysically important neutral atomic oxygen [OI] line at 4.7448?THz. The local oscillator is a third-order distributed feedback quantum cascade laser operating in continuous wave mode at 4.741?THz. A quasi-optical, superconducting NbN hot electron bolometer is used as the mixer. We recorded a double sideband receiver noise temperature (TrecDSB) of 815?K, which is ? 7 times the quantum noise limit () and an Allan variance time of 15?s at an effective noise fluctuation bandwidth of 18?MHz. Heterodyne performance was confirmed by measuring a methanol line spectrum. Subject bolometersheterodyne detectionniobium compoundsoptical receiversoscillatorsoxygenquantum cascade laserssubmillimetre wave receiverssuperconducting microwave devices To reference this document use: http://resolver.tudelft.nl/uuid:fa3afe66-db0f-4903-870c-7166b11b2f53 DOI https://doi.org/10.1063/1.4774085 Publisher American Institute of Physics ISSN 0003-6951 Source https://doi.org/10.1063/1.4774085 Source Applied Physics Letters, 102 (1), 2013 Part of collection Institutional Repository Document type journal article Rights © 2013 American Institute of Physics Files PDF Ren_2013.pdf 990.45 KB Close viewer /islandora/object/uuid:fa3afe66-db0f-4903-870c-7166b11b2f53/datastream/OBJ/view