Enhanced distribution of a wave-packet in lattices with disorder and nonlinearity.

Naether, Uta; Rojas-Rojas, Santiago; Martínez, Alejandro J; Stützer, Simon; Tünnermann, Andreas; Nolte, Stefan; Molina, Mario I; Vicencio, Rodrigo A; Szameit, Alexander

Naether, Uta; Rojas-Rojas, Santiago; Martínez, Alejandro J; Stützer, Simon; Tünnermann, Andreas; Nolte, Stefan; Molina, Mario I; Vicencio, Rodrigo A; Szameit, Alexander.

Afiliação

Naether U; Departamento de Física, MSI-Nucleus on Advanced Optics, and Center for Optics and Photonics (CEFOP), Facultad de Ciencias, Universidad de Chile, Santiago, Chile.

Opt Express ; 21(1): 927-34, 2013 Jan 14.

Article em En | MEDLINE | ID: mdl-23388986

RESUMO

We show, numerically and experimentally, that the presence of weak disorder results in an enhanced energy distribution of an initially localized wave-packet, in one- and two-dimensional finite lattices. The addition of a focusing nonlinearity facilitates the spreading effect even further by increasing the wave-packet effective size. We find a clear transition between the regions of enhanced spreading (weak disorder) and localization (strong disorder).

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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Opt Express Assunto da revista: OFTALMOLOGIA Ano de publicação: 2013 Tipo de documento: Article País de afiliação: Chile País de publicação: Estados Unidos

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