Journal
JOURNAL OF OPTICS
Volume 20, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2040-8986/aac1d9
Keywords
photonic nanojet; spherical particle; cylindrical particle; cubic particle; square bar particle; photonic jet key parameters
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Funding
- Tomsk Polytechnic University Competitiveness Enhancement Program grant
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We present the systematic study of key characteristics field intensity enhancement, spatial extents) of the 2D- and 3D-photonic nanojets (PNJs) produced by geometrically-regular micronsized dielectric particles illuminated by a plane laser wave. By means of the finite-difference time-domain calculations, we highlight the differences and similarities between PNJs in these two spatial configurations for curved- (sphere, circular cylinder) and rectangle-shaped scatterers (cube, square bar). Our findings can be useful, for example, for the design of particle-based highresolution imaging because the spatial resolution by such systems might be further controlled by the optimization of refractive index contrast and geometrical shape of the particle-lens.
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