|
Abstract
|
Lensshaped
particles with different sizes for various refractive indices have been investigated
under plane wave illumination by using 2DMMP
simulation. Distribution of the power in the
vicinity of opposite boundary of the particle has resulted in a tightly focused photonic nanojet
in specific conditions. The results show that the beam waists are smaller than the diffraction
limit, and they propagate over several optical wavelengths without significant diffraction while
the beam reaches a high intensity. In this paper, it is argued the manipulation of various
dielectric lens shapes with respect to a highly confined power distribution in the producing
nanojet has been parameterized according to the beam waist and divergence with regards to
particular refractive index (glass, plastic and patinal), and appropriate structure shapes.
Optimized dimensions of the nanojets for different physical properties are calculated.
|