Ishikawa Atsushi, Zhang Shuang, Genov Dentcho A, Bartal Guy, Zhang Xiang
NSF Nanoscale Science and Engineering Center, University of California, Berkeley, California 94720-1740, USA.
Phys Rev Lett. 2009 Jan 30;102(4):043904. doi: 10.1103/PhysRevLett.102.043904. Epub 2009 Jan 28.
We propose a novel subwavelength terahertz (THz) waveguide based on the magnetic plasmon polariton mode guided by a narrow gap in a negative permeability metamaterial. Deep subwavelength waveguiding (<lambda/10) with group velocities down to c/21.8 is demonstrated in a straight waveguide, a 90 degrees bend, and a splitter. The proposed waveguiding system inherently has no cutoff for any core width and height, paving the way toward the deep subwavelength transport of THz waves for integrated THz device applications.
我们提出了一种基于负磁导率超材料中窄间隙引导的磁等离子体激元模式的新型亚波长太赫兹（THz）波导。在直波导、90度弯曲波导和分路器中展示了深度亚波长波导（<λ/10），其群速度低至c/21.8。所提出的波导系统本质上对任何芯宽和芯高都没有截止频率，为用于集成太赫兹器件应用的太赫兹波的深度亚波长传输铺平了道路。
