Nippon Telegraph and Telephone Corporation

Masato Takiguchi

Akihiko Shinya

Masaya Notomi

Satoshi Sasaki

Kengo Nozaki

Kenta Takata

Eiichi Kuramochi

Guoqiang Zhang

Tetsuya Mukai

Naotomo Takemura

Kota Tateno

Atsushi Yokoo

Sergent Sylvain

A nanowire optical device includes: a photonic crystal body having a planar shape and provided on a base part; an optical waveguide by a line defect in which a plurality of defects including a part without grating elements of the photonic crystal body are linearly arrayed; a trench formed in a waveguide direction in the optical waveguide; a nanowire made of a semiconductor and arranged in the trench; an n-type region formed on one end side of the nanowire; a p-type region formed on the other end side of the nanowire; an active region provided to be interposed between the n-type region and the p-type region in the nanowire; a first electrode connected to the n-type region; and a second electrode connected to the p-type region.

Nanowire optical device

A photonic crystal device to be used for trapping an atom and including a photonic crystal body, a slot waveguide, and an attractive force trap light laser. The photonic crystal body includes a base and a plurality of lattice elements periodically provided on the base, the slot waveguide is arranged between periodic lattice rows and includes an opening on one side face of the photonic crystal body, and the attractive force trap light laser is excited by excitation light incident from the opening and oscillates at a wavelength being longer than a wavelength of an absorption edge of the atom.

Photonic crystal device and atom trapping device

The amount of outward shift of a lattice element () and a lattice element (), the outward shift being symmetrical with respect to a resonator center on a straight line, is 0.42 to 0.5 times a lattice constant of a photonic crystal. The amount of outward shift of a lattice element () and a lattice element (), the outward shift being symmetrical with respect to the resonator center on the straight line, is 0.26 to 0.38 times the lattice constant of the photonic crystal. The amount of outward shift of a lattice element () and a lattice element (), the outward shift being symmetrical with respect to the resonator center on the straight line, is 0.13 to 0.19 times the lattice constant of the photonic crystal. The amount of outward shift of a lattice element () and a lattice element (), the outward shift being symmetrical with respect to the resonator center on the straight line, is &#x2212;0.1 to 0 times the lattice constant of the photonic crystal.

Photonic crystal optical element having an active medium in a light confinement portion

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Tokyo, Japan

Masato Takiguchi