Light bullets in waveguide arrays: spacetime-coupling, spectral symmetry breaking and superluminal decay [Invited]

被引：32

作者：

Eilenberger, Falk ^{[1
]}

Minardi, Stefano ^{[1
]}

Szameit, Alexander ^{[1
]}

Roepke, Ulrich ^{[2
]}

Kobelke, Jens ^{[2
]}

Schuster, Kay ^{[2
]}

Bartelt, Hartmut ^{[2
]}

Nolte, Stefan ^{[1
]}

Tuennermann, Andreas ^{[1
]}

Pertsch, Thomas ^{[1
]}

机构：

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

[2] Inst Photon Technol, D-07745 Jena, Germany

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 23期

关键词：

ANOMALOUS-DISPERSION; SUPERCONTINUUM GENERATION; PULSE PROPAGATION; DISCRETE SOLITONS; GROUP-VELOCITY; DYNAMICS; COLLAPSE; RETRIEVAL;

D O I：

10.1364/OE.19.023171

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the effects of the space-time coupling (STC) on the nonlinear formation and propagation of Light Bullets, spatiotemporal solitons in which dispersion and diffraction along all dimensions are balanced by nonlinearity, through periodic media with a weak transverse modulation of the refractive index, i.e. waveguide arrays. The STC arises from wavelength dependence of the strength of inter-waveguide coupling and can be tuned by variation of the array geometry. We show experimentally and numerically that the STC breaks the spectral symmetry of Light Bullets to a considerable degree and modifies their group velocity, leading to superluminal propagation when the Light Bullets decay. (C) 2011 Optical Society of America

引用

页码：23171 / 23187

页数：17

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