Title:
励起子ポラリトン光スイッチ
Document Type and Number:
Japanese Patent JP3817580
Kind Code:
B2
Abstract:
A waveguide having a periodic structure and the excitation of exciton polariton as one form of interactions between radiation fields and matter systems are applied to light switching to provide an optical switch that is excellent in light intensity extinction ratio and operable at a speed in the terahertz order. The optical switch includes a polariton and photon interacting region (5) made of a grating (3) formed on a top face of a transparent substrate (2) and a semiconductor layer (4) with which the grating (3) is covered. The polariton and photon interacting region (5) is irradiated from a free space with a controllable light (7) having a preestablished wavelength and also from a free space with a control light (6) having a preselected wavelength to control the transmissivity of the controllable light (7) through the polariton and photon interacting region (5).
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Inventors:
Teruya Ishihara
Application Number:
JP2002521644A
Publication Date:
September 06, 2006
Filing Date:
August 17, 2001
Export Citation:
Assignee:
Japan Science and Technology Agency
RIKEN
RIKEN
International Classes:
G02F1/35; G02F1/01; G02F1/017
Domestic Patent References:
| JP2129616A |
Other References:
Physical Review B,1998年,Vol.57,No.19,12428-12434
マツダ財団研究報告書 科学技術振興関係,1997年,Vol.9,145-149
マツダ財団研究報告書 科学技術振興関係,1997年,Vol.9,145-149
Attorney, Agent or Firm:
Kazuyuki Hirayama
Kaizu Hozo
Kaizu Hozo