Prospective performance of graphene HEB for ultrasensitive detection of sub-mm radiation
作者： Boris S. Karasik , Christopher B. McKitterick , Daniel E. Prober
DOI: 10.1007/S10909-014-1087-7
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摘要: Noise Equivalent Power and time constant of a submillimeter wave Hot-Electron Bolometer (HEB) made from monolayer graphene are analyzed using the lowest electron-phonon thermal conductance data reported to date. Frequency-domain multiplexed Johnson Thermometry (JNT) is used for detector readout. Planar microantennas or waveguides can provide efficient coupling microdevice radiation. The results show that HEB be radiation background limited at very low level corresponding photon noise on space telescope with cryogenically cooled mirror. Beside high sensitivity, absence hard power saturation limit, higher operating temperature, ability read 1000s elements single broadband amplifier will advantages such detector.
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