Terahertz Detection by a Homodyne Field Effect Transistor Multiplicative Mixer

Author

Preu, Sascha ; Kim, Sangwoo ; Verma, Ravi ; Burke, Peter G. ; Vinh, Nguyen Q. ; Sherwin, Mark S. ; Gossard, Arthur C.

Author_Institution

Phys. Dept., Univ. of California, Santa Barbara, CA, USA

Volume

2

Issue

3

fYear

2012

fDate

5/1/2012 12:00:00 AM

Firstpage

278

Lastpage

283

Abstract

We demonstrate an efficient scheme for mixing and down-conversion of two orthogonally polarized terahertz beams in a field effect transistor at frequencies far above frequencies where the transistor has gain. One signal is applied between gate and source and the other between drain and source. The mixer is a field detector with 960 pW/Hz noise-equivalent power at a local oscillator (LO) power of 8 μW . Orthogonal LO and signal power allows for simple diplexing.

Keywords

field effect transistors; homodyne detection; mixers (circuits); mixing; oscillators; terahertz wave detectors; diplexing; down conversion; homodyne field effect transistor multiplicative mixer; local oscillator power; mixing; noise-equivalent power; orthogonally polarized terahertz beams; signal power; terahertz detection; Antennas; Detectors; Educational institutions; FETs; Logic gates; Noise; Resistance; Field-effect transistor (FET); mixer; terahertz (THz) detection;

fLanguage

English

Journal_Title

Terahertz Science and Technology, IEEE Transactions on

Publisher

ieee

ISSN

2156-342X

Type

jour

DOI

10.1109/TTHZ.2012.2191671

Filename

6189376