Comparison of photonic nanojets key parameters produced by nonspherical microparticles |
| |
Authors: | Yuri E Geints Igor V Minin Ekaterina K Panina Alexander A Zemlyanov Oleg V Minin |
| |
Institution: | 1.Tomsk Polytechnical University,Tomsk,Russia;2.Zuev Institute of Atmospheric Optics SB RAS,Tomsk,Russia;3.Tomsk State University,Tomsk,Russia |
| |
Abstract: | Photonic nanojet (PNJ) phenomenon arising near transparent dielectric microparticles subject to plane wave illumination in the visible is considered. The near-field light scattering patterns produced by shaped wavelength-sized particles (hexahedron, cuboid, sphere, hemisphere, axicon, assembled particles) are numerically simulated and key PNJ parameters are analyzed. Particle shape influence on the peak intensity and spatial resolution of produced PNJ is investigated. We demonstrate that due to the reciprocal action of spherical-type and conical-type focusing of the special type of composite particles constituted of a hemisphere and an axicon can produce highly localized PNJ with peak intensity considerable higher than that for isolated regular particle (sphere, microaxicon, hemisphere). |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|