Manipulating the scattering pattern with non-Hermitian particle arrays

Optics Express
Yun Jing ZhangAndrea Alù

Abstract

We show that an array of non-Hermitian particles can enable advanced manipulations of the scattering pattern, beyond what is possible with passive structures. Active linear elements are shown to provide zero forward scattering without sacrificing the total scattered power, and by adding more particles, it is possible to control the zero-scattering direction at will. We apply our theory to realistic implementations of scatterer arrays, using loaded dipole antennas in which we tune the load impedance and investigate the stability of these arrays based on a realistic dispersion model for the gain elements. Finally, we discuss the possibility of controlling multiple frequencies to enable broadband control of the scattering pattern.

References

Aug 11, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Andrea Alù, Nader Engheta
Mar 21, 2008·Physical Review Letters·K G MakrisZ H Musslimani
Oct 13, 2009·Nature Materials·A V KabashinA V Zayats
Aug 21, 2010·Science·Alberto G CurtoNiek F van Hulst
Jan 15, 2011·Physical Review Letters·Andrea Alù, Nader Engheta
Mar 17, 2011·Physical Review Letters·Baile ZhangGeorge Barbastathis
Jun 28, 2011·Physical Review Letters·Zin LinDemetrios N Christodoulides
Oct 20, 2012·Advanced Materials·Pai-Yen ChenAndrea Alù
Feb 28, 2013·Nature Communications·Yuan Hsing FuBoris Luk'yanchuk
Oct 10, 2013·Optics Express·Braulio García-CámaraBorja Sepúlveda
Nov 22, 2014·Science·Hossein HodaeiMercedeh Khajavikhan
Jan 7, 2015·Nature Communications·Romain FleuryAndrea Alù
Jun 25, 2015·Nano Letters·Claire van LareAlbert Polman
Mar 7, 2019·Light, Science & Applications·Alexey V KrasavinAnatoly V Zayats

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