The new class of diode pumped alkali vapor lasers (DPALs) offers high efficiency cw laser beams at wavelengths which efficiently couple to photovoltaic (PV) cells: silicon cells at 895 nm (cesium), and GaAs cells at 795 nm (rubidium) and at 770 nm (potassium). DPAL electrical efficiencies of 25–30% are projected, enabling PV cell efficiencies ∼40% (Si) and ∼60% (GaAs). Near‐diffraction‐limited DPAL device power scaling into the multi‐kilowatt regime from a single aperture is projected. The potential application to power beaming propulsion to raise satellites from LEO to Geo is discussed.


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    Titel :

    DPAL: A new class of lasers for cw power beaming at ideal photovoltaic cell wavelengths


    Beteiligte:
    Krupke, W. F. (Autor:in) / Beach, R. J. (Autor:in) / Payne, S. A. (Autor:in) / Kanz, V. K. (Autor:in) / Early, J. T. (Autor:in) / Komurasaki, Kimiya (Herausgeber:in)

    Kongress:

    BEAMED ENERGY PROPULSION: Second International Symposium on Beamed Energy Propulsion ; 2003 ; Sendai (JAPAN)


    Erschienen in:

    AIP Conference Proceedings ; 702 , 1 ; 367-377


    Erscheinungsdatum :

    30.03.2004


    Format / Umfang :

    11 pages





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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