Title :
Far-Infrared Spectrum Analysis Using Plasmon Modes in a Quantum-Well Transistor
Author :
Shaner, E.A. ; Grine, A.D. ; Wanke, M.C. ; Lee, Mark ; Reno, J.L. ; Allen, S.J.
Author_Institution :
Sandia Nat. Lab., Albuquerque, NM
Abstract :
Excitation of resonant plasmon modes by far-infrared (FIR) radiation in a quantum-well transistor is used to analyze the spectral content of FIR illumination at frequencies between 0.58 and 0.99 THz. A split grating gate design that allows localized pinch-off of the transistor channel greatly enhances FIR response and allows completely electrical tuning of the plasmon resonance, enabling broadband FIR spectrum analysis without moving parts. A voltage ramp applied to the gate can generate a spectrum at video rate
Keywords :
field effect transistors; plasmons; quantum well devices; spectral analysers; submillimetre wave detectors; submillimetre wave spectra; 0.58 to 0.99 THz; far-infrared spectrum analysis; quantum-well transistor; resonant plasmon modes; Finite impulse response filter; Frequency; Gratings; Lighting; Plasmons; Quantum wells; Resonance; Spectral analysis; Tuning; Voltage; Far infrared; submillimeter-wave detectors; submillimeter-wave spectroscopy; terahertz;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.881670
