Tunable terahertz plasmon in grating-gate coupled graphene with a resonant cavity<xref ref-type="fn" rid="cpb142016fn1">*</xref>

Tunable terahertz plasmon in grating-gate coupled graphene with a resonant cavity*

Yan Bo^a),^b), Yang Xin-Xin^b), Fang Jing-Yue^a), Huang Yong-Dan^b), Qin Hua^b), Qin Shi-Qiao^c)

Fig.#cod#x00A0;2. a Transmission spectrum of a device without graphene. The red dashed lines mark the resonant frequencies. b#cod#x00A0;The transverse electric field E x at f = 2.6#cod#x00A0;THz and z = #cod#x2212;20#cod#x00A0;nm. The blue dotted, red dashed, and black solid lines represent E x E 0 for h Si #cod#x003D; 100#cod#x00A0;#cod#x03BC;m, 200#cod#x00A0;#cod#x03BC;m, and 400#cod#x00A0;#cod#x03BC;m, respectively. c#cod#x2013;e Distributions of the transverse electric field E x E 0 with different grating gates at f = 2.6#cod#x00A0;THz and h Si #cod#x003D; 200#cod#x00A0;#cod#x03BC;m.