Reexamination of Kerker Phenomena and Beyond
Jeng Yi Lee1*, Andrey E. Miroshnichenko2,3, Ray-Kuang Lee1,4
1Institute of photonics technologies, National Tsing Hua University, HsinChu, Taiwan
2Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Canberra, Australia
3School of Engineering and Information Technology, University of New South Wales, Canberra, Australia
4Physics Division, National Center for Theoretical Sciences, HsinChu, Taiwan
* Presenter:Jeng Yi Lee,
We revisit the specific conditions with zero backward scattering or with near zero forward scattering, so-called Kerker phenomena, on passive systems with subwavlength dimension. The physical bounds and its limitations of scattering coefficients are clearly indicated by means of the phase diagram[1]. We also observe from numerical calculation and theoretical analysis that through exciting high multipole moments with proper phases and modulus, the scatterers can exhibit simultaneous forward and backward scattering suppressed, beyond Kerker effects. This result reveals that scattered radiation would be perpendicular to wave-vector, which is still consistent with optical theorem.The corresponding configuration with realizable materials at optical frequency is proposed to support the result. The work is believed to benefit applications of metasurface, directional emission or directional sensors.

[1] Jeng Yi Lee, Andrey E. Miroshnichenko, and Ray-Kuang Lee, "Reexamination of Kerker’s conditions by means of the phase diagram," Phys. Rev. A 96, 043846 (2017)

Keywords: Mie theory, Kerker conditions, unidirectional scattering