Hot electron bolometer heterodyne receiver with a 4.7-THz quantum cascade laser as a local oscillator

J. L. Kloosterman, D. J. Hayton, Y. Ren, T. Y. Kao, J. N. Hovenier, J. R. Gao, T. M. Klapwijk, Q. Hu, C. K. Walker, J. L. Reno

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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 (T r e c D S B) of 815 K, which is ∼ 7 times the quantum noise limit (h ν 2 k B) 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.

Original languageEnglish (US)
Article number011123
JournalApplied Physics Letters
Volume102
Issue number1
DOIs
StatePublished - Jan 7 2013

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

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. (2013). Hot electron bolometer heterodyne receiver with a 4.7-THz quantum cascade laser as a local oscillator. Applied Physics Letters, 102(1), [011123]. https://doi.org/10.1063/1.4774085