title: Fourier-transform terahertz near-field imaging of one-dimensional slit arrays: mapping of electric-field-, magnetic-field-, and Poynting vectors.
abstract: We present 2D measurements of the full THz electric field behind a sample consisting of multiple slits in a metal foil. Our measurements, which have a sub-wavelength spatial, and a sub-period temporal resolution, reveal electric field lines, electric field vortices and saddle points. From our measurements we are able to reconstruct the magnetic field and, finally, the position and time-dependent Poynting vector which shows the flow of energy behind the sample. Our results show that it is possible to study the flow of light near sub-wavelength plasmonic structures such as slit-arrays and, by implication, other metamaterial samples.
authors: M A
authors: MA
authors: Seo
authors: A J L
authors: AJ
authors: Adam
authors: J H
authors: JH
authors: Kang
authors: J W
authors: JW
authors: Lee
authors: S C
authors: SC
authors: Jeoung
authors: Q H
authors: QH
authors: Park
authors: P C M
authors: PC
authors: Planken
authors: D S
authors: DS
authors: Kim