title: Nanophotonic code embedded in embossed hologram for hierarchical information retrieval.
abstract: A hierarchical hologram works in both optical far-fields and near-fields, the former being associated with conventional holographic images, and the latter being associated with the optical intensity distribution based on a nanometric structure that is accessible only via optical near-fields. We propose embedding a nanophotonic code, which is retrievable via optical near-field interactions involving nanometric structures, within an embossed hologram. Due to the one-dimensional grid structure of the hologram, evident polarization dependence appears in retrieving the code. Here we describe the basic concepts, numerical simulations, and experimental results in fabrication of a prototype hierarchical hologram and describe its optical characterization.
authors.affiliation: Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-8656, Japan. tate@nanophotonics.t.u-tokyo.ac.jp
authors.forename: Naoya
authors.initials: N
authors.lastname: Tate
authors.forename: Makoto
authors.initials: M
authors.lastname: Naruse
authors.forename: Takashi
authors.initials: T
authors.lastname: Yatsui
authors.forename: Tadashi
authors.initials: T
authors.lastname: Kawazoe
authors.forename: Morihisa
authors.initials: M
authors.lastname: Hoga
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Ohyagi
authors.forename: Tokuhiro
authors.initials: T
authors.lastname: Fukuyama
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Kitamura
authors.forename: Motoichi
authors.initials: M
authors.lastname: Ohtsu
mesh_terms: D000465:Algorithms; D003460:Crystallization; D003627:Data Interpretation, Statistical; D006696:Holography / Q000379:methods; D008853:Microscopy / Q000379:methods; D008855:Microscopy, Electron, Scanning / Q000379:methods; D015233:Models, Statistical; D036103:Nanotechnology / Q000379:methods*; D055096:Optical Devices; D055095:Optics and Photonics; D017785:Photons