We experimentally characterize the confinement of terahertz radiation in tapered slot waveguides. Both the transverse and axial field components exhibit strong lateral confinement. An antisymmetric axial field distribution is observed across the output gap.
© 2010 The Optical Society
H. Zhan, R. Mendis, and D. Mittleman, "Subwavelength Confinement of THz Radiation in Tapered Plasmonic Slot Waveguides," in Conference on Lasers and Electro-Optics 2010, OSA Technical Digest (CD) (Optical Society of America, 2010), paper CTuQ1.