Anderson localization and nonlinearity in one-dimensional disordered photonic lattices

被引：768

作者：

Lahini, Yoav ^{[1
]}

Avidan, Assaf ^{[1
]}

Pozzi, Francesca ^{[2
]}

Sorel, Marc ^{[2
]}

Morandotti, Roberto ^{[3
]}

Christodoulides, Demetrios N. ^{[4
]}

Silberberg, Yaron ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Phys Complex Syst, IL-76100 Rehovot, Israel

[2] Univ Glasgow, Dept Elect & Elect Engn, Glasgow, Lanark, Scotland

[3] Univ Quebec, Inst Natl Rech Sci, Varennes, PQ, Canada

[4] Univ Cent Florida, CREOL, Coll Opt, Orlando, FL 32816 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.100.013906

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We experimentally investigate the evolution of linear and nonlinear waves in a realization of the Anderson model using disordered one-dimensional waveguide lattices. Two types of localized eigenmodes, flat-phased and staggered, are directly measured. Nonlinear perturbations enhance localization in one type and induce delocalization in the other. In a complementary approach, we study the evolution on short time scales of delta-like wave packets in the presence of disorder. A transition from ballistic wave packet expansion to exponential (Anderson) localization is observed. We also find an intermediate regime in which the ballistic and localized components coexist while diffusive dynamics is absent. Evidence is found for a faster transition into localization under nonlinear conditions.

引用

页数：4

共 43 条

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