Analysis of NbN Hot Electron Bolometer Receiver Noise Temperatures Above 2 THz With a Quantum Noise Model
Journal article, 2009

This paper summarizes our receiver noise temperature data of NbN HEB mixers obtained at a number of local oscillator frequencies between 1.9 to 4.3 THz in order to verify the role of quantum noise. The experimental data show that the receiver noise temperature increases roughly linearly with frequency. At 4.3 THz, we measured a receiver noise temperature of 1300 K, which is about 6 times (hf/k B) . The noise data at different frequencies are compared to a prediction of a noise model including the contribution of quantum noise and making use of a hot-spot model for mixing. We draw a preliminary conclusion that at 4.3 THz roughly 30% of the receiver noise temperature can be ascribed to the quantum noise. However, more dedicated measurements are required in order to further support the quantum noise model for HEB mixers.

noise

submillimeterwaves

Hot electron bolometer

THz

Author

Pourya Khosropanah

Netherlands Institute for Space Research (SRON)

Wen Zhang

Netherlands Institute for Space Research (SRON)

Erik Kollberg

Chalmers, Applied Physics, Physical Electronics

Karl Sigfrid Yngvesson

University of Massachusetts

J. R. Gao

Delft University of Technology

Netherlands Institute for Space Research (SRON)

Tarun Bansal

Delft University of Technology

Netherlands Institute for Space Research (SRON)

Merlijn Hajenius

Netherlands Institute for Space Research (SRON)

Delft University of Technology

IEEE Transactions on Applied Superconductivity

1051-8223 (ISSN)

Vol. 19 3 274-277 5067036

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TASC.2009.2018817

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4/5/2022 6