ScholarlyCommons

Title

PTM Metamaterials via Complex-Coordinate Transformation Optics

Author(s)

Giuseppe Castaldi, University of Sannio
Silvio Savoia, University of Sannio
Vincenzo Galdi, University of Sannio
Andrea Alù, University of Texas at Austin
Nader Engheta, University of PennsylvaniaFollow

Abstract

We extend the transformation-optics paradigm to a complex spatial coordinate domain, in order to deal with electromagnetic metamaterials characterized by balanced loss and gain, giving special emphasis to parity-time (PT) symmetric metamaterials. We apply this general theory to complex-source-point radiation and anisotropic transmission resonances, illustrating the capability and potentials of our approach in terms of systematic design, analytical modeling, and physical insights into complex-coordinate wave objects and resonant states.

Document Type

Journal Article

Date of this Version

4-23-2013

Comments

Castaldi, G., Savoia, S., Galdi, V., Alù, A., & Engheta, N. (2013). PT Metamaterials via Complex-Coordinate Transformation Optics. Physical Review Letters, 110(17), 173901. doi: 10.1103/PhysRevLett.110.173901

© 2013 American Physical Society