title: Guiding, focusing, and sensing on the subwavelength scale using metallic wire arrays.
abstract: We show that tapered arrays of thin metallic wires can manipulate electromagnetic fields on the subwavelength spatial scale. Two types of nanoscale imaging applications using terahertz and midinfrared waves are enabled: image magnification and radiation focusing. First, the tapered wire array acts as a multipixel TEM endoscope by capturing an electromagnetic field profile created by deeply subwavelength objects at the endoscope's tip and magnifying it for observation. Second, the image of a large mask at the endoscope's base is projected onto a much smaller image at the tip.
authors.affiliation: Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USA. gena@physics.utexas.edu
authors.forename: G
authors.initials: G
authors.lastname: Shvets
authors.forename: S
authors.initials: S
authors.lastname: Trendafilov
authors.forename: J B
authors.initials: JB
authors.lastname: Pendry
authors.forename: A
authors.initials: A
authors.lastname: Sarychev