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Complex colloidal structures with non-linearoptical properties formed in an optical trap

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    0535416 - ÚPT 2021 RIV US eng J - Článek v odborném periodiku
    Brzobohatý, Oto - Chvátal, Lukáš - Šiler, Martin - Zemánek, Pavel
    Complex colloidal structures with non-linearoptical properties formed in an optical trap.
    Optics Express. Roč. 28, č. 25 (2020), s. 37700-37707. ISSN 1094-4087
    Grant CEP: GA ČR(CZ) GA18-27546S; GA MŠk(CZ) LO1212; GA MŠk ED0017/01/01; GA MŠk(CZ) EF16_026/0008460
    Institucionální podpora: RVO:68081731
    Klíčová slova: optical trapping * nonlinear optical medium * artificial materials
    Kód oboru RIV: BH - Optika, masery a lasery
    Obor OECD: Optics (including laser optics and quantum optics)
    Impakt faktor: 3.894, rok: 2020
    https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-25-37700&id=444109

    llumination of a colloidal suspension of dielectric nanoparticles (50 nm in radius)with counter-propagating non-interfering laser beams of sufficient power leads to spatial redistri-bution of particles due to associated optical forces and formation of colloidal structures composedof thousands of nanoparticles along the beams. We employ a weak probe beam propagatingthrough the colloidal structure and demonstrate that the colloidal structure acts effectively as anon-linear optical medium, similar to a gradient index lens, with optical transformation propertiesexternally tunable by trapping laser power. With an increasing number of nanoparticles weobserve the formation of a more complex colloidal structure axially and even laterally and weexplain the origin of this process.
    Trvalý link: http://hdl.handle.net/11104/0313443

     
     
Počet záznamů: 1