Terahertz plasmon polariton formed in a Fabry–Pérot cavity and a grating-coupled two-dimensional electron gas

Yong-dan Huang; Hua Qin; Bao-shun Zhang; Jing-bo Wu; Gao-chao Zhou; Biao-bing Jin

doi:10.1117/12.2032899

23 August 2013 Terahertz plasmon polariton formed in a Fabry–Pérot cavity and a grating-coupled two-dimensional electron gas

Yong-dan Huang, Hua Qin, Bao-shun Zhang, Jing-bo Wu, Gao-chao Zhou, Biao-bing Jin

Author Affiliations +

Proceedings Volume 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications; 89090D (2013) https://doi.org/10.1117/12.2032899
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

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.

Citation Download Citation

Yong-dan Huang, Hua Qin, Bao-shun Zhang, Jing-bo Wu, Gao-chao Zhou, and Biao-bing Jin "Terahertz plasmon polariton formed in a Fabry–Pérot cavity and a grating-coupled two-dimensional electron gas", Proc. SPIE 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications, 89090D (23 August 2013); https://doi.org/10.1117/12.2032899

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