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Proceedings Paper

Terahertz plasmon polariton formed in a Fabry–Pérot cavity and a grating-coupled two-dimensional electron gas
Author(s): Yong-dan Huang; Hua Qin; Bao-shun Zhang; Jing-bo Wu; Gao-chao Zhou; Biao-bing Jin
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Paper Abstract

Localized plasmon modes are excited and probed in a large-area grating-gate GaN/AlGaN high-electron-mobility transistor structure embedded in a Fabry-Pérot cavity using a terahertz time-domain spectroscopy (THz-TDS) at cryogenic temperature. Determined by the length of grating finger and the electron concentration, the frequency of localized plasmon modes can be continuously tuned by the gate voltage in the spectral range from 0.1 THz to 1.5 THz. When the plasmon frequency is tuned to be in resonance with the terahertz Fabry-Pérot cavity mode, a strong coupling between the plasmon mode and the cavity mode is observed and the terahertz plasmon-polaritons are formed in such a cavity-coupled two-dimensional electron system. The electromagnetic simulations have confirmed the strong coupling between them.

Paper Details

Date Published: 23 August 2013
PDF: 8 pages
Proc. SPIE 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications, 89090D (23 August 2013); doi: 10.1117/12.2032899
Show Author Affiliations
Yong-dan Huang, Suzhou Institute of Nano-tech and Nano-bionics (China)
Hua Qin, Suzhou Institute of Nano-tech and Nano-bionics (China)
Bao-shun Zhang, Suzhou Institute of Nano-tech and Nano-bionics (China)
Jing-bo Wu, Nanjing Univ. (China)
Univ. of Leeds (United Kingdom)
Gao-chao Zhou, Nanjing Univ. (China)
Biao-bing Jin, Nanjing Univ. (China)


Published in SPIE Proceedings Vol. 8909:
International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications
Marco Rahm; Konstantin Vodopyanov; Wei Shi; Cunlin Zhang, Editor(s)

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