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Diffraction limited photonic hook via scattering and diffraction of dual-dielectric structures.

Authors :
Pacheco-Peña, Victor
Riley, Joseph Arnold
Liu, Cheng-Yang
Minin, Oleg V.
Minin, Igor V.
Source :
Scientific Reports; 10/13/2021, Vol. 11 Issue 1, p1-8, 8p
Publication Year :
2021

Abstract

Photonic hooks have demonstrated to be great candidates for multiple applications ranging from sensing up to optical trapping. In this work, we propose a mechanism to produce such bent structured light beams by exploiting the diffraction and scattering generated by a pair of dielectric rectangles immersed in free space. It is shown how the photonic hooks are generated away from the output surface of the dielectrics by correctly engineering each individual dielectric structure to generate minimum diffraction and maximum scattering along the propagation axis. Different scenarios are studied such as dual-dielectric structures having different lateral dimensions and refractive index as well as cases when both dielectrics have the same lateral dimensions. The results are evaluated both numerically and theoretically demonstrating an excellent agreement between them. These results may open new avenues for optical trapping, focusing and sensing devices via compact and simple dual-dielectric structures. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20452322
Volume :
11
Issue :
1
Database :
Complementary Index
Journal :
Scientific Reports
Publication Type :
Academic Journal
Accession number :
153011412
Full Text :
https://doi.org/10.1038/s41598-021-99744-5