Polychromatic dynamic localization in curved photonic lattices

被引：141

作者：

Szameit, Alexander ^{[1
]}

Garanovich, Ivan L. ^{[2
]}

Heinrich, Matthias ^{[1
]}

Sukhorukov, Andrey A. ^{[2
]}

Dreisow, Felix ^{[1
]}

Pertsch, Thomas ^{[1
]}

Nolte, Stefan ^{[1
]}

Tuennermann, Andreas ^{[1
]}

Kivshar, Yuri S. ^{[2
]}

机构：

[1] Univ Jena, Inst Appl Phys, D-07743 Jena, Germany

[2] Australian Natl Univ, Res Sch Phys & Engn, Nonlinear Phys Ctr, Canberra, ACT 0200, Australia

来源：

NATURE PHYSICS | 2009年 / 5卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

WAVE-GUIDE ARRAYS; OPTICAL BLOCH OSCILLATIONS; LIGHT;

D O I：

10.1038/NPHYS1221

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Dynamic localization is the suppression of the broadening of a charged-particle wave packet as it moves along a periodic potential in an a. c. electric field(1-3). The same effect occurs for optical beams in curved photonic lattices, where the lattice bending has the role of the driving field, and leads to the cancellation of diffraction(4-8). Dynamic localization was also observed for Bose-Einstein condensates(9), and could have a role in the spin dynamics of molecular magnets(10). It has been predicated that dynamic localization will occur in multidimensional lattices at a series of resonances between lattice, particle and driving-field parameters(1). However, only the first dynamic localization resonance in one-dimensional lattices has been observed in any physical system(6-9). Here, we report on the experimental observation of higher-order and mixed dynamic localization resonances in both one- and two-dimensional photonic lattices. New features such as spectral broadening of the dynamic localization resonances and localization-induced transformation of the lattice symmetry are demonstrated. These phenomena could be used to shape polychromatic beams emitted by supercontinuum light sources(11,12).

引用

页码：271 / 275

页数：5

共 30 条

[1] Discretizing light behaviour in linear and nonlinear waveguide lattices [J].