Nanophotonic code embedded in embossed hologram for hierarchical information retrieval.
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.
Tate
Naoya
N
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
Naruse
Makoto
M
Yatsui
Takashi
T
Kawazoe
Tadashi
T
Hoga
Morihisa
M
Ohyagi
Yasuyuki
Y
Fukuyama
Tokuhiro
T
Kitamura
Mitsuru
M
Ohtsu
Motoichi
M
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