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Creators/Authors contains: "Manjare, Manoj"

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  1. ; ; ; ; ; ; ; (, Nature Communications)
    Abstract Photoluminescence from spatially inhomogeneous plasmonic nanostructures exhibits fascinating wavelength-dependent nonlinear behaviors due to the intraband recombination of hot electrons excited into the conduction band of the metal. The properties of the excited carrier distribution and the role of localized plasmonic modes are subjects of debate. In this work, we use plasmonic gap-mode resonators with precise nanometer-scale confinement to show that the nonlinear photoluminescence behavior can become dominated by non-thermal contributions produced by the excited carrier population that strongly deviates from the Fermi-Dirac distribution due to the confinement-induced large-momentum free carrier absorption beyond the dipole approximation. These findings open new pathways for controllable light conversion using nonequilibrium electron states at the nanoscale. 
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  2. ; ; ; ; (, Optics Letters)
  3. ; ; ; ; ; ; ; ; (, ACS Photonics)
    null (Ed.)
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  4. ; ; ; ; ; (, Nature Communications)
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