Spoof surface plasmons resonance effect and tunable electric response of improved metamaterial in the terahertz regime

Wang Yue†^a),^b), Zhang Li-Ying^b), Mei Jin-Shuo^a), Zhang Wen-Chao^a), Tong Yi-Jing^c)

(a) Time domain wave forms of THz pulses for the reference and the sample, without and with photo-excitation. (b) Corresponding Fourier-transform amplitude spectra of the reference pulse and the sample pulses.