Tunable antenna coupled intersubband terahertz detector

Author

Gautam, Nishit ; Kawamura, Jonathan ; Chahat, Nacer ; Karasik, Boris S. ; Focardi, Paolo ; Gulkis, Samuel ; Pfeiffer, Loren ; Sherwin, Mark

Author_Institution

Inst. of Terahertz Sci. & Technol., UC-Santa Barbara, Santa Barbara, CA, USA

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

We report on the development of a tunable antenna coupled intersubband terahertz (TACIT) detector based on GaAs/AlGaAs two dimensional electron gas. A successful device design and micro-fabrication process have been developed which maintain the high mobility (1.1×10⁶ cm²/V-s at 10K) of a 2DEG channel in the presence of a highly conducting backgate. Gate voltage-controlled device resistance and direct THz sensing has been observed. The goal is to operate as a nearly quantum noise limited heterodyne sensor suitable for passively-cooled space platforms.

Keywords

antennas; heterodyne detection; quantum noise; terahertz wave detectors; two-dimensional electron gas; 2DEG channel; direct THz sensing; gate voltage controlled device resistance; highly conducting backgate; passively cooled space platforms; quantum noise limited heterodyne sensor; tunable antenna coupled intersubband terahertz detector; two dimensional electron gas; Antennas; Detectors; HEMTs; Logic gates; MODFETs; Metals; Resistance;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956457

Filename

6956457