Formation and interaction characteristics of two-component spatial weak-light soliton in a four-level double-Λ type system

被引：18

作者：

She, Yanchao ^{[1
,2
]}

Wang, Denglong ^{[1
,2
]}

Zhang, Weixi ^{[3
]}

He, Zhangming ^{[1
,2
]}

Ding, Jianwen ^{[1
,2
]}

机构：

[1] Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China

[2] Xiangtan Univ, Inst Nanophys & Rare Earth Luminescence, Xiangtan 411105, Peoples R China

[3] Tongren Univ, Dept Phys, Tongren 554300, Peoples R China

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2010年 / 27卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ELECTROMAGNETICALLY INDUCED TRANSPARENCY; DARK OPTICAL SOLITONS; COLD 3-STATE MEDIUM; RUBIDIUM ATOMS; GAP SOLITONS; BRIGHT; DYNAMICS; MEDIA;

D O I：

10.1364/JOSAB.27.000208

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By using the multiple-scale method, we study analytically the formation and stability of two-component spatial optical solitons in a cold, lifetime-broadened resonant four-level double-Lambda type atomic system via electromagnetically induced transparency. It is shown that stable two-component (1 + 1) dimension spatial optical solitons with extremely weak light intensity can occur, which is different from the passive ones with photorefractive and planar waveguides. Furthermore, the interaction characteristics between two solitons are studied by numerical simulations. We find that the collisional dynamics and the energy transfer of the two solitons are closely correlated with their relative phase shift. Our results may provide a good idea to obtain useful spatial optical solitons for application in optical soliton communications. (C) 2010 Optical Society of America

引用

页码：208 / 214

页数：7

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