Title

Mapping an on-chip terahertz antenna by a scanning near-field probe and a fixed field-effect transistor

RIS ID

98476

Publication Details

Li, L., Jian-Dong, S., Lewis, R. A., Yun-Fei, S., Dong-Min, W., Yong, C. & Hua, Q. (2015). Mapping an on-chip terahertz antenna by a scanning near-field probe and a fixed field-effect transistor. Chinese Physics B, 24 (2), 028504-1-028504-5.

Abstract

In the terahertz (THz) regime, the active region for a solid-state detector usually needs to be implemented accurately in the near-field region of an on-chip antenna. Mapping of the near-field strength could allow for rapid verification and optimization of new antenna/detector designs. Here, we report a proof-of-concept experiment in which the field mapping is realized by a scanning metallic probe and a fixed AlGaN/GaN field-effect transistor. Experiment results agree well with the electromagnetic-wave simulations. The results also suggest a field-effect THz detector combined with a probe tip could serve as a high sensitivity THz near-field sensor.

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Link to publisher version (DOI)

http://dx.doi.org/10.1088/1674-1056/24/2/028504