Title :
Extremely Thin Metamaterial as Slab Waveguide at Terahertz Frequencies
Author :
Minowa, Yosuke ; Nagai, Masaya ; Tao, Hu ; Fan, Kebin ; Strikwerda, A.C. ; Zhang, Xin ; Averitt, Richard D. ; Tanaka, Koichiro
Author_Institution :
Dept. of Phys., Kyoto Univ., Kyoto, Japan
Abstract :
We investigate the waveguiding properties of a planar metamaterial slab using terahertz time-domain attenuated total reflection spectroscopy. The enhancement of evanescent waves is observed for transverse electric and transverse magnetic excitation and is caused by resonant excitation of waveguide modes in the slab. Our calculation describes the experimental results and justifies the extremely small effective thickness. We also studied the dispersion relations of the waveguide modes of the slab by theoretical calculation.
Keywords :
metamaterials; planar waveguides; slabs; terahertz spectroscopy; attenuated total reflection spectroscopy; dispersion relations; evanescent waves; extremely thin metamaterial; planar metamaterial slab; resonant excitation; slab waveguide; terahertz frequencies; terahertz time-domain spectroscopy; transverse electric excitation; transverse magnetic excitation; waveguiding properties; Dispersion; Metamaterials; Optical waveguides; Spectroscopy; Surface waves; Time domain analysis; Metamaterials; optical waveguides; spectroscopy; time-domain analysis;
Journal_Title :
Terahertz Science and Technology, IEEE Transactions on
DOI :
10.1109/TTHZ.2011.2167832
