Title :
From slowing down to stopping of electromagnetic waves within ultrawide bandwidth based on plasmonic graded metallic gratings: A novel scheme for “trapped rainbow”
Author :
Gan, Qiaoqiang ; Fu, Zhan ; Ding, Yujie J. ; Bartoli, Filbert J.
Author_Institution :
Electr. & Comput. Eng. Dept., Lehigh Univ., Bethlehem, PA
Abstract :
We demonstrate that since the group velocity of spoof surface plasmon polariton modes at the cutoff frequency is extremely low, electromagnetic waves with different frequencies can be slowed down or even stopped at different positions.
Keywords :
diffraction gratings; electromagnetic wave propagation; polaritons; surface plasmons; cutoff frequency; electromagnetic wave stopping; group velocity; plasmonic graded metallic gratings; surface plasmon polariton modes; trapped rainbow; ultrawide bandwidth; Bandwidth; Biomedical optical imaging; Cutoff frequency; Dispersion; Electromagnetic scattering; Gratings; Optical films; Optical surface waves; Plasmons; Surface waves; (050.2770) Gratings; (230.7370) Waveguides; (240.6680) Surface plasmons; (260.3910) Metals, optics of;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
