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Surface Plasmon Characteristics of Tunable Photoluminescence in Single Gold Nanorods

Abstract : Light emission resulting from two-photon excited gold nanoparticles has been proposed to originate from the radiative decay of surface plasmon resonances. In this vein, we investigated luminescence from individual gold nanorods and found that their emission characteristics closely resemble surface plasmon behavior. In particular, we observed spectral similarities between the scattering spectra of individual nanorods and their photoluminescence emission. We also measured a blueshift of the photoluminescence peak wavelength with decreasing aspect ratio of the nanorods as well as an optically tunable shape-dependent spectrum of the photoluminescence. The emission yield of single nanorods strongly depends on the orientation of the incident polarization consistent with the properties of surface plasmons.
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Submitted on : Thursday, January 23, 2020 - 5:38:30 PM
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Alexandre Bouhelier, Renaud Bachelot, Gilles Lerondel, Serguei Kochtcheev, Pascal Royer, et al.. Surface Plasmon Characteristics of Tunable Photoluminescence in Single Gold Nanorods. Physical Review Letters, American Physical Society, 2005, 95 (26), ⟨10.1103/PhysRevLett.95.267405⟩. ⟨hal-02453338⟩



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