Characteristics of photonic nanojets from two-layer dielectric hemisphere
Y Liu, X Liu, L Li, W Chen, Y Chen, Y Huang… - Chinese Physics …, 2017 - iopscience.iop.org
The properties of the photonic nanojet generated by a two-layer dielectric microsphere are
studied. Simulation results indicate that this novel structure can generate a photonic nanojet
outside its volume when the refractive index contrast relative to the background medium is
higher than 2: 1 in the condition of plane wave incidence. When the refractive index is
smaller than 2, we show that an ultralong nanojet generated by the two-layer hemisphere
has an extension of 28.2 wavelengths, and compared with the homogeneous dielectric …
studied. Simulation results indicate that this novel structure can generate a photonic nanojet
outside its volume when the refractive index contrast relative to the background medium is
higher than 2: 1 in the condition of plane wave incidence. When the refractive index is
smaller than 2, we show that an ultralong nanojet generated by the two-layer hemisphere
has an extension of 28.2 wavelengths, and compared with the homogeneous dielectric …