Experimental evidence of convective and absolute instabilities in optics

被引：0

作者：

Szwaj, C ^{[1
]}

Louvergneaux, E ^{[1
]}

Agez, G ^{[1
]}

Glorieux, P ^{[1
]}

Taki, M ^{[1
]}

机构：

[1] Univ Sci & Tech Lille Flandres Artois, Ctr Etud & Rech Lasers & Applicat, Lab Phys Lasers Atomes & Mol, F-59655 Villeneuve Dascq, France

来源：

EXPERIMENTAL CHAOS | 2004年 / 742卷

关键词：

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We evidence experimentally the convective and absolute instabilities in an optical system. In our system, the presence of noise and spatial non-uniformities (as in most of the "real systems") add additional complexities. First we derive analytical expressions of both thresholds for the ideal noiseless and spatially uniform situation. Then numerical simulations allow to determine signatures of those instabilities. The corresponding noise sustained and dynamical patterns are observed experimentally in a liquid crystal layer subjected to a laser beam with tilted feedback.

引用

页码：261 / 266

页数：6

共 13 条

[1] Noisy precursors in one-dimensional patterns [J].