A terahertz plasmon cavity detector

作者：Dyer G C^*; Vinh N Q; Allen S J; Aizin G R; Mikalopas J; Reno J L; Shaner E A

来源：Applied Physics Letters, 2010, 97(19): 193507.

DOI：10.1063/1.3513339

Sensitivity of a plasmonic detector is enhanced by integrating a broadband log-periodic antenna with a two-dimensional plasma cavity that is defined by source, drain, and multiple gates of a GaAs/AlGaAs high electron mobility transistor. Both narrow-band terahertz detection and a rich harmonic spectrum are evident. With a bolometric sensor in the channel, we report responsivity, on resonance at 235-240 GHz and at 20 K, of up to 7 kV/W and a noise equivalent power of 5 x 10(-10) W/Hz(1/2).

• 出版日期2010-11-8