2-DIMENSIONAL CRYSTALS AND QUASI-CRYSTALS IN NONLINEAR OPTICS

被引：76

作者：

PAMPALONI, E ^{[1
]}

RAMAZZA, PL ^{[1
]}

RESIDORI, S ^{[1
]}

ARECCHI, FT ^{[1
]}

机构：

[1] UNIV FLORENCE, DEPT PHYS, FLORENCE, ITALY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.74.258

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of two-dimensional periodic and quasiperiodic structures in the transverse profile of an optical beam circulating in a loop which contains a nonlinear medium. The symmetries of the patterns are imposed by an image rotation within the loop. We propose a simple model which shows the existence of two unstable bands of transverse wave vectors. Close to threshold, the predictions of the model are qualitatively and quantitatively confirmed by the experiment. © 1995 The American Physical Society.

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页码：258 / 261

页数：4

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