The concept of using Fresnel optics as part of power beaming, astronomy or sail systems has been suggested by several authors. The primary issues for large Fresnel optics are the difficulties in fabricating these structures and deploying them in space and for astronomy missions the extremely narrow frequency range of these optics. In proposals where the telescope is used to transmit narrow frequency laser power, the narrow bandwidth has not been an issue. In applications where the optic is to be used as part of a telescope, only around 10−5 to 10−6 of the optical energy in a narrow frequency band can be focused into an image. The limited frequency response of a Fresnel optic is addressed by the use of a corrective optic that will broaden the frequency response of the telescope by three or four orders of magnitude. This broadening will dramatically increase the optical power capabilities of the system and will allow some spectroscopy studies over a limited range. Both the fabrication of Fresnel optics as large as five meters and the use of corrector optics for telescopes have been demonstrated at LLNL. For solar and laser sail missions the use of Fresnel amplitude zone plates made of very thin sail material is also discussed.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Large Space Telescopes Using Fresnel Lens For Power Beaming, Astronomy and Sail Missions


    Beteiligte:
    Early, James T. (Autor:in) / Pakhomov, Andrew V. (Herausgeber:in)

    Kongress:

    BEAMED ENERGY PROPULSION: First International Symposium on Beamed Energy Propulsion ; 2002 ; Huntsville, Alabama (USA)


    Erschienen in:

    AIP Conference Proceedings ; 664 , 1 ; 399-410


    Erscheinungsdatum :

    14.05.2003


    Format / Umfang :

    12 pages





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Large Space Telescopes Using Fresnel Lens for Power Beaming, Astronomy, and Sail Missions

    Early, J. T. | British Library Conference Proceedings | 2003


    Solar Sail - Fresnel Zone Plate Lens for a Large Space Based Telescope

    Early, J. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2002



    High Intensity Laser Power Beaming Architecture for Space and Terrestrial Missions

    Nayfeh, Taysir / Fast, Brian / Raible, Daniel et al. | NTRS | 2011


    Ground to Space Laser Power Beaming: Missions, Technologies, and Economic Advantages

    Rather, J. D. G. | British Library Conference Proceedings | 2003