Comparison of photonic nanojets key parameters produced by nonspherical microparticles

• Published in: Optical and quantum electronics Vol. 49; no. 3; pp. 1 - 7
• Main Authors: Geints, Yuri E., Minin, Igor V., Panina, Ekaterina K., Zemlyanov, Alexander A., Minin, Oleg V.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2017; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Computer Communication Networks; Electrical Engineering; Lasers; Microparticles; Optical Devices; Optics; Parameters; Particle shape; Particulate composites; Photonics; Physics; Physics and Astronomy; Plane waves; Spatial resolution; Nanophotonics; Photonic nanojet; Light scattering; Microparticles
• ISSN: 0306-8919; 1572-817X
• DOI: 10.1007/s11082-017-0958-y

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).