Scattering properties of PT-symmetric objects. (26th May 2016)

• Record Type: Journal Article
• Authors: Miri, Mohammad-Ali; Eftekhar, Mohammad Amin; Facao, Margarida; Abouraddy, Ayman F; Bakry, Ahmed; Razvi, Mir A N; Alshahrie, Ahmed; Alù, Andrea; Christodoulides, Demetrios N
• Is Part Of: Journal of optics. Volume 18:Number 7(2016:Jul.)
• Publication Date: 2016-05-26
• Subjects: PT symmetry -- non-Hermitian -- scattering; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/18/7/075104
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: We investigate the scattering response of parity-time (PT) symmetric structures. We show that, due to the local flow of energy between gain and loss regions, such systems can deflect light in unusual ways, as a function of the gain/loss contrast. Such structures are highly anisotropic and their scattering patterns can drastically change as a function of the angle of incidence. In addition, we derive a modified optical theorem for PT-symmetric scattering systems, and discuss its ramifications.