Optical Analogues for Massless Dirac Particles and Conical Diffraction in One Dimension

被引：77

作者：

Zeuner, J. M. ^{[1
]}

Efremidis, N. K. ^{[2
]}

Keil, R. ^{[1
]}

Dreisow, F. ^{[1
]}

Christodoulides, D. N. ^{[3
]}

Tuennermann, A. ^{[1
]}

Nolte, S. ^{[1
]}

Szameit, A. ^{[1
]}

机构：

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

[2] Univ Crete, Dept Appl Math, GR-71409 Iraklion, Crete, Greece

[3] Univ Cent Florida, Sch Opt, Ctr Res & Educ Opt & Lasers, Orlando, FL 32816 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 02期

关键词：

ELECTRON; LIGHT;

D O I：

10.1103/PhysRevLett.109.023602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that light propagating in an appropriately designed lattice can exhibit dynamics akin to that expected from massless relativistic particles as governed by the one-dimensional Dirac equation. This is accomplished by employing a waveguide array with alternating positive and negative effective coupling coefficients, having a band structure with two intersecting minibands. Through this approach optical analogues of massless particle-antiparticle pairs are experimentally realized. One-dimensional conical diffraction is also observed for the first time in this work.

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页数：5

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