title: Transmission line probes for scanning photon-tunneling microscopy.
abstract: Because metalized light probes for scanning photon-tunneling microscopy are tapered waveguides beyond cut-off, tapered coaxial transmission lines have been tried instead. It is shown here that insertion losses in such a line can be reduced by asymmetrically phase-apodizing the illuminating lens. Alternatively, a strip rather than a coaxial line can be used.
authors.affiliation: Laboratory of Cell Biology and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892.
authors.forename: C W
authors.initials: CW
authors.lastname: McCutchen
mesh_terms: D004553:Electric Conductivity; D016252:Microscopy, Scanning Tunneling / Q000295:instrumentation*; D017785:Photons