Perfect Optical Absorbers Based on Plasmon Resonances in Subwavelength-Patterned Gold Thin Films

Hanna Hulkkonen, Aashish Sah, Tapio Niemi

    Tutkimustuotos: AbstraktiScientific

    Abstrakti

    Photon absorption is a fundamental part of the operation of photodetectors, solar cells, photothermal devices, and optical filters. Perfect absorbers are materials that can efficiently absorb nearly all incident radiation either in a narrow or broad wavelength range. Perfect light absorption in metals has been achieved using thick porous foams, impedance matching lossy films, and metallic nanopillars or needles with a gradual refractive index change. Here we present a subwavelength patterned gold thin film that is capable of absorbing 97% of incident light in the visible range 320–650 nm. Optical absorption is high (>90%) even at high incidence angles.
    AlkuperäiskieliEnglanti
    TilaJulkaistu - 20 marrask. 2018
    TapahtumaSymposium on Future Prospects for Photonics
    : Sensing & Imaging
    - Silja Symphony, Stockholm, Ruotsi
    Kesto: 20 marrask. 201822 marrask. 2018
    http://www.tut.fi/en/symposiumphotonics/

    Conference

    ConferenceSymposium on Future Prospects for Photonics
    Maa/AlueRuotsi
    KaupunkiStockholm
    Ajanjakso20/11/1822/11/18
    www-osoite

    Sormenjälki

    Sukella tutkimusaiheisiin 'Perfect Optical Absorbers Based on Plasmon Resonances in Subwavelength-Patterned Gold Thin Films'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

    Siteeraa tätä