Open AccessSimulation of laser light focusing by a dielectric nanocylinder with gold core
Author(s) -
A. A. Savelyeva,
Е. С. Козлова
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1368/2/022030
Subject(s) - materials science , optics , core (optical fiber) , dielectric , laser , gaussian beam , full width at half maximum , intensity (physics) , laser beams , finite difference time domain method , beam (structure) , optoelectronics , physics
Using the finite difference time domain method it was shown that a nanocylinder from silica glass with a diameter of 360 nm and a gold core of 40 nm focuses TM-polarized laser light into a nanojet with a full width at half maximum of 298 nm. Maximum intensity in focal spot is about 4 times higher than intensity of incident Gaussian beam.