Ultrafast spin relaxation in quantum-confined structures for all-optical switching

Osamu Wada, Atsushi Tackeuchi, Yuji Nishikawa, Tetsuya Nishimura

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    Electron-spin relaxation has been investigated in a variety of quantum confined structures including GaAs-based quantum wells and quantum wires as well as InP-based quantum wells, and it has been shown to exhibit ultrafast relaxation in the picosecond, and even in the femtosecond, range. This ultrafast relaxation has been used together with the exciton absorption nonlinearity as an novel principle of all-optical switching device which can avoid the speed limit due to the slow carrier lifetime in conventional switching devices. Experiments on GaAs-based quantum-well spin switches have shown 4-ps gate switch operation. Also, experimental analyses have shown the feasibility of these devices at a high contrast ratio (13 dB) and high repetition rate (40 GHz). The application of this device to a demultiplexer has been proposed.

    Original languageEnglish
    Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
    Pages602-613
    Number of pages12
    Volume3283
    DOIs
    Publication statusPublished - 1998
    EventPhysics and Simulation of Optoelectronic Devices VI - San Jose, CA, United States
    Duration: 1998 Jan 261998 Jan 26

    Other

    OtherPhysics and Simulation of Optoelectronic Devices VI
    CountryUnited States
    CitySan Jose, CA
    Period98/1/2698/1/26

    Fingerprint

    Optical Switching
    optical switching
    Semiconductor quantum wells
    Quantum Well
    quantum wells
    Gallium Arsenide
    Switches
    Switch
    Semiconductor quantum wires
    Carrier lifetime
    switches
    Quantum Wires
    Excitons
    Femtosecond
    Exciton
    carrier lifetime
    quantum wires
    electron spin
    repetition
    Lifetime

    ASJC Scopus subject areas

    • Applied Mathematics
    • Computer Science Applications
    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Cite this

    Wada, O., Tackeuchi, A., Nishikawa, Y., & Nishimura, T. (1998). Ultrafast spin relaxation in quantum-confined structures for all-optical switching. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3283, pp. 602-613) https://doi.org/10.1117/12.316711

    Ultrafast spin relaxation in quantum-confined structures for all-optical switching. / Wada, Osamu; Tackeuchi, Atsushi; Nishikawa, Yuji; Nishimura, Tetsuya.

    Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3283 1998. p. 602-613.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Wada, O, Tackeuchi, A, Nishikawa, Y & Nishimura, T 1998, Ultrafast spin relaxation in quantum-confined structures for all-optical switching. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3283, pp. 602-613, Physics and Simulation of Optoelectronic Devices VI, San Jose, CA, United States, 98/1/26. https://doi.org/10.1117/12.316711
    Wada O, Tackeuchi A, Nishikawa Y, Nishimura T. Ultrafast spin relaxation in quantum-confined structures for all-optical switching. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3283. 1998. p. 602-613 https://doi.org/10.1117/12.316711
    Wada, Osamu ; Tackeuchi, Atsushi ; Nishikawa, Yuji ; Nishimura, Tetsuya. / Ultrafast spin relaxation in quantum-confined structures for all-optical switching. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3283 1998. pp. 602-613
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