title: Terahertz spectroscopy of the reactive and radiative near-field zones of split ring resonator.
abstract: A terahertz microscope has been used to excite and observe the resonant modes of a single split ring resonator in the reactive and radiative near-field zones. The two lowest resonant modes of an isolated split ring resonator with their corresponding radiation patterns are reported; they showed good agreement to simulations. The passage from the reactive to radiative near-field zone is also discussed. Further, our result introduced a novel technique to perform terahertz time-domain spectroscopy of samples a few tens of micrometers in size by measuring the in-plane radiative near-field zone.
authors.affiliation: Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Sakyo-ku, Kyoto, Japan. fblanchard@icems.kyoto-u.ac.jp
authors.forename: F
authors.initials: F
authors.lastname: Blanchard
authors.forename: K
authors.initials: K
authors.lastname: Ooi
authors.forename: T
authors.initials: T
authors.lastname: Tanaka
authors.forename: A
authors.initials: A
authors.lastname: Doi
authors.forename: K
authors.initials: K
authors.lastname: Tanaka
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008853:Microscopy / Q000295:instrumentation*; D055069:Terahertz Imaging / Q000295:instrumentation*; D055068:Terahertz Spectroscopy / Q000295:instrumentation*; D014159:Transducers