PT Metamaterials via Complex-Coordinate Transformation Optics

被引：185

作者：

Castaldi, Giuseppe ^{[1
]}

Savoia, Silvio ^{[1
]}

Galdi, Vincenzo ^{[1
]}

Alu, Andrea ^{[2
]}

Engheta, Nader ^{[3
]}

机构：

[1] Univ Sannio, Dept Engn, Waves Grp, I-82100 Benevento, Italy

[2] Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78712 USA

[3] Univ Penn, Dept Elect & Syst Engn, Philadelphia, PA 19104 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 17期

关键词：

Co-ordinate transformation - Complex source points - General theory - Resonant state - Spatial coordinates - Systematic designs - Transformation optics - Transmission resonance;

D O I：

10.1103/PhysRevLett.110.173901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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. DOI: 10.1103/PhysRevLett.110.173901

引用

页数：5

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