Experimental study of hot spots in gold/glass nanocomposites films by photoemission electron microscopy

Chawki Awada (1) , Grégory Barbillon (2) , Fabrice Charra (1) , Ludovic Douillard (1) , Jean-Jacques Greffet (2)

1 SPCSI - Service de Physique et de Chimie des Surfaces et Interfaces
2 Laboratoire Charles Fabry / Naphel

In this paper, an experimental study of hot spots in gold/dielectric films using photoemission electron microscopy is reported. This technique allows a characterization of the statistical optical properties with unprecedented accuracy in the 800- to 1040-nm range. Theoretical predictions of the scaling theory on the number and intensity wavelength dependences of hot spots in the near-infrared are confirmed. Statistical properties of the intensity distribution, spectral behavior, and spatial localization of the hot spots are reported.

Domains: Engineering Sciences [physics]; Optics / Photonic; Physics [physics]; Physics [physics]; Optics [physics.optics]

Chawki Awada, Grégory Barbillon, Fabrice Charra, Ludovic Douillard, Jean-Jacques Greffet. Experimental study of hot spots in gold/glass nanocomposites films by photoemission electron microscopy. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2012, 85, pp.045438. ⟨10.1103/PhysRevB.85.045438⟩. ⟨hal-00785293⟩