Optica Open
Browse
arXiv.svg (5.58 kB)

Geometric Phase-Driven Scattering Evolutions

Download (5.58 kB)
preprint
posted on 2024-03-09, 17:00 authored by Pengxiang Wang, Yuntian Chen, Wei Liu
We explore the classical topic of scattering manipulation, from a different perspective of controlled excitations and interferences of quasi-normal modes (QNMs). Scattered waves can be expanded as coherent additions of radiations from the QNMs excited, and thus relative amplitudes and phases among them are crucial factors to engineer for scattering shaping. Here relying on the electromagnetic reciprocity, we provide full geometric representations based on the Poincar\'e sphere for those factors, and identify the hidden underlying geometric phases that drive the scattering evolutions. Further synchronous exploitations of the incident polarization-dependent geometric phases and excitation amplitudes enable efficient manipulations of both scattering intensities and polarizations. Continuous geometric phase spanning $2\pi$ is directly manifest through scattering variations, even in the rather elementary configuration of an individual particle scattering waves of varying polarizations. We have essentially merged three vibrant fields of geometric phase, Mie scattering and QNM, and unlocked an extra dimension of geometric phase for scattering manipulations, which will greatly broaden the horizons of many disciplines associated with not only electromagnetic scatterings, but also scatterings of waves in other forms.

History

Disclaimer

This arXiv metadata record was not reviewed or approved by, nor does it necessarily express or reflect the policies or opinions of, arXiv.

Usage metrics

    Categories

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC