Title :
Complex-coordinate transformation optics and PT-symmetric metamaterials
Author :
Castaldi, G. ; Savoia, S. ; Galdi, Vincenzo ; Alu, Andrea ; Engheta, Nader
Author_Institution :
Dept. of Eng., Univ. of Sannio, Benevento, Italy
Abstract :
We introduce a complex-coordinate extension of the transformation-optics approach which enables for the generation and modeling of a general class of metamaterials with balanced loss and gain characterized by parity-time (PT) symmetry. The proposed approach allows for the metamaterial-based interpretation and physical implementation of wave-objects (e.g., complex-source-points) and resonant states residing in complex-coordinate spaces.
Keywords :
optical fabrication; optical losses; optical metamaterials; parity; PT-symmetric metamaterials; balanced gain; balanced loss; complex-coordinate extension; complex-coordinate spaces; complex-coordinate transformation optics; general class; metamaterial generation; metamaterial modeling; metamaterial-based interpretation; parity-time symmetry; physical implementation; resonant states; wave-objects; Educational institutions; Electromagnetics; Magnetic materials; Metamaterials; Optics; Slabs;
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2013 7th International Congress on
Conference_Location :
Talence
Print_ISBN :
978-1-4799-1229-2
DOI :
10.1109/MetaMaterials.2013.6808935
