PT-Symmetric Talbot Effects

被引：161

作者：

Ramezani, Hamidreza ^{[1
]}

Christodoulides, D. N. ^{[2
]}

Kovanis, V. ^{[3
]}

Vitebskiy, I. ^{[3
]}

Kottos, Tsampikos ^{[1
,4
]}

机构：

[1] Wesleyan Univ, Dept Phys, Middletown, CT 06459 USA

[2] Univ Cent Florida, Coll Opt & Photon CREOL, Orlando, FL 32816 USA

[3] USAF, Res Lab, Sensors Directorate, Wright Patterson AFB, OH 45433 USA

[4] MPI Dynam & Self Org, D-37073 Gottingen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 03期

基金：

美国国家科学基金会;

关键词：

NON-HERMITIAN HAMILTONIANS; GRATINGS; OPTICS;

D O I：

10.1103/PhysRevLett.109.033902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that complex PT-symmetric photonic lattices can lead to a new class of self-imaging Talbot effects. For this to occur, we find that the input field pattern has to respect specific periodicities dictated by the symmetries of the system. While at the spontaneous PT-symmetry breaking point the image revivals occur at Talbot lengths governed by the characteristics of the passive lattice, at the exact phase it depends on the gain and loss parameter, thus allowing one to control the imaging process.

引用

页数：5

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