Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1989-09-28
1991-04-09
Healy, Brian
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
350 9611, 350 9612, 350 9634, 350355, 357 16, 357 30, 307425, 307430, G02B 610, H01L 2714, H03F 700
Patent
active
050059335
ABSTRACT:
A non-linear optical device for carrying out optical signal processing using a non-linear optical material having a biasing electric field perpendicularly applied to a semiconductor that is laminated to form a quantum well structure. A well layer of the quantum well structure has substantially the same thickness as the Bohr radius of an exciton, and the magnitude of the biasing electric field is selected so that the distance between centers of gravity of an electron and a hole, which constitute the exciton, is from a fraction of to substantially equal to the effective Bohr radius. The thickness and potential of a barrier layer of the quantum well structure is selected such that the increase in the width of the absorption peak of the exciton caused by ionization due to tunneling in the biasing electric field is smaller than the width of the absorption peak with no electric field, and the wavelength of light used to activate the device is selected such that the photon energy n.omega. is substantially equal to or slightly smaller than Eex/2, where Eex is the energy generated by the exciton of the quantum well structure. That light is polarized, and its electric field vector has a component normal to the layer of the quantum well structure.
REFERENCES:
patent: 4549788 (1985-10-01), Chemla
patent: 4626075 (1986-12-01), Chemla
patent: 4716449 (1987-12-01), Miller
patent: 4737003 (1988-04-01), Matsumura et al.
patent: 4818079 (1989-04-01), Maserjian
patent: 4840446 (1989-06-01), Nakamura et al.
patent: 4873610 (1989-10-01), Shimuzu et al.
patent: 4936645 (1990-06-01), Yoon et al.
patent: 4946235 (1990-08-01), Scozzafava et al.
patent: 4948225 (1990-08-01), Rider et al.
Journal of Lightwave Technology, vol. 6, No. 6, Jun. 1988, pp. 953-970, Stegeman, G., et al., "Third Order Nonlinear Integrated Optics".
Physical Review Letters, vol. 61, No. 5, Aug. 1, 1988, pp. 613-616, Shimuzu, A., "Optical Nonlinearity Induced by Giant Dipole Moment of Wannier Excitons".
Physical Review, vol. 37, No. 14, May 15, 1988, pp. 8527-8529, Shimuzu, A., "Excitonic Optical Nonlinearity of Quantum-Well Structures in a Static Electric Field".
Canon Kabushiki Kaisha
Healy Brian
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