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Design and Characterization of Plasmonic Terahertz Wave Detectors Based on Silicon Field-Effect Transistors
- Source :
- Japanese Journal of Applied Physics. 51:06FE17
- Publication Year :
- 2012
- Publisher :
- IOP Publishing, 2012.
-
Abstract
- We report the first implementation of a modeling and simulation environment for the plasmonic terahertz (THz) detector based on the silicon (Si) field-effect transistor (FET) with a technology computer-aided-design (TCAD) platform. The nonresonant plasmonic behavior has been modeled by introducing a quasi-plasma electron box as a two-dimensional electron gas (2DEG) in the channel region. The alternate-current (AC) signal as an incoming THz wave radiation successfully induced a direct-current (DC) drain-to-source voltage as a detection signal in the broadband sub-THz frequency regime. The simulated dependences of photoinduced DC detection signals on structural parameters such as gate length and dielectric thickness confirmed the operation principle of the nonresonant plasmonic THz detector in the Si FET structure. We evaluated the design specifications of THz detectors considering both responsivity and noise equivalent power (NEP) as the typical performance metrics. The proposed methodologies provide the physical design platform for developing novel plasmonic THz detectors operating in the nonresonant detection mode.
- Subjects :
- Materials science
Physics and Astronomy (miscellaneous)
Terahertz radiation
business.industry
Transistor
Detector
General Engineering
Physics::Optics
General Physics and Astronomy
Signal
law.invention
Responsivity
Optics
law
Optoelectronics
Field-effect transistor
business
Noise-equivalent power
Plasmon
Subjects
Details
- ISSN :
- 13474065 and 00214922
- Volume :
- 51
- Database :
- OpenAIRE
- Journal :
- Japanese Journal of Applied Physics
- Accession number :
- edsair.doi.dedup.....731312bad95ff6d5ccde06cf68a3ccfe
- Full Text :
- https://doi.org/10.1143/jjap.51.06fe17