Ultrafast tunable antenna-coupled quantum-well THz detectors operating above 100K

Author

Serapiglia, G.B. ; Sherwin, M.S. ; Hanson, M. ; Doty, M.F. ; Focardi, P. ; McGrath, W.R. ; Gossard, A.C.

Author_Institution

Phys. Dept. & Center for Terahertz Sci. & Technol., UCSB, Santa Barbara, CA, USA

Volume

1

fYear

2005

fDate

19-23 Sept. 2005

Firstpage

267

Abstract

This extended abstract reports on the fabrication and testing of a new type of detector in which THz radiation excites a collective oscillation of electrons confined in a quantum well and set between two gates in a microscopic four terminal transistor. The energy dissipates into other modes of the electron gas, warming it and changing the source-drain resistance. The detector shows amplifier-limited rise times near 1 ns and has detected THz laser radiation at temperatures up to 120K. The frequency of the collective oscillation tunes with small gate voltages. The first-generation tunable antenna-coupled intersubband Terahertz (TACIT) detectors tune between 1.5 and 2 THz with voltages <2V.

Keywords

submillimetre wave antennas; submillimetre wave detectors; 1.5 THz; 100 K; 120 K; 2 THz; 2 V; THz detector; THz laser radiation; collective oscillation; electron gas; energy dissipation; gate voltage; quantum well; source-drain resistance; terminal transistor; tunable antenna; Electron microscopy; Fabrication; Gas lasers; Laser modes; Potential well; Quantum wells; Radiation detectors; Testing; Tunable circuits and devices; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on

Print_ISBN

0-7803-9348-1

Type

conf

DOI

10.1109/ICIMW.2005.1572511

Filename

1572511