title: Deep subwavelength terahertz waveguides using gap magnetic plasmon.
abstract: 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.
authors.affiliation: NSF Nanoscale Science and Engineering Center, University of California, Berkeley, California 94720-1740, USA.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Ishikawa
authors.forename: Shuang
authors.initials: S
authors.lastname: Zhang
authors.forename: Dentcho A
authors.initials: DA
authors.lastname: Genov
authors.forename: Guy
authors.initials: G
authors.lastname: Bartal
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhang