Demonstration of a tunable antenna-coupled intersubband terahertz (TACIT) mixer

C. Yoo, M. Huang, J. H. Kawamura, K. W. West, L. N. Pfeiffer, B. S. Karasik, M. S. Sherwin

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


A fast, voltage-tunable terahertz mixer based on the intersubband transition of a high-mobility 2-dimensional electron gas has been fabricated from a single 40 nm GaAs-AlGaAs square quantum well heterostructure. The device is called a Tunable Antenna-Coupled Intersubband Terahertz mixer and shows tunability of the detection frequency from 2.52 to 3.11 THz with small (<1 V) top gate and bottom gate voltage biases. Mixing at 2.52 THz has been observed at 60 K with a -3dB intermediate frequency bandwidth exceeding 6 GHz.

Original languageEnglish (US)
Article number013504
JournalApplied Physics Letters
Issue number1
StatePublished - Jan 6 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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