T. Otsuji, Takayuki Watanabe, S. Boubanga-Tombet, T. Suemitsu, D. Coquillat, W. Knap, D. Fateev, V. Popov
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Asymmetric dual-grating gate InGaAs/InAlAs/InP HEMTs for ultrafast and ultrahigh sensitive terahertz detection
This paper reviews recent advances in ultrafast and ultrahigh sensitive broadband terahertz detection utilizsing asymmetric double-grating-gate InP-based high-electron-mobility transistors, demonstrating a record responsivity of 2.2 kV/W at 1 THz under drain-unbiased conditions with a superior low noise equivalent power of 15 pW/√Hz and 6.4 kV/W even at 1.5 THz under drain-biased conditions.
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