TITLE:
A Discrete Model of the Evanescent Light Emission from Ultra-Thin Layers
AUTHORS:
N. Mirchin, E. Tannous, I. Lapsker, A. Laihtman, A. Peled
KEYWORDS:
Evanescent Waves, Light Scattering, Thin Nanofilms, Thickness Profiles, Optical Nanoscopy
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.3 No.5,
May
7,
2015
ABSTRACT: A discrete model of the Differential Evanescent Light Intensity (DELI) technique was developed to
calculate and map 3D nanolayers thicknesses from the evanescent light intensity captured from
optical waveguides. The model was used for ultra-thin Pd nanometric layers sputtered on glass
substrates. The layers thickness profiles were displayed in 3D and 1D profiles plots. The total
thickness profiles of the ultra-thin Pd films obtained in the range of 1-10 nm were validated using
AFM measurements. Based on the model developed the evanescent photon extraction parameter
of the material was estimated.