Steady-state spatial solitons in biased photovoltaic-photorefractive crystals for short circuits

被引：12
|
作者：
Lu, KQ [1 ]
Zhang, YP
Tang, TT
Hou, X
机构：
[1] Xidian Univ, Dept Appl Phys, Xian 710071, Peoples R China
[2] Xian Jiaotong Univ, Dept Elect Sci & Technol, Xian 710049, Peoples R China
[3] Acad Sinica, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt Technol, Xian 710068, Peoples R China
来源：
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2001年 / 3卷 / 04期
关键词：
photorefractive crystal; optical soliton; photovoltaic effect;
D O I：
10.1088/1464-4258/3/4/306
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A theory on spatial solitons in photovoltaic (PV)-photorefractive (PR) crystals for short circuits is developed that gives rise to spatial solitons due to both a bulk PV effect and spatial nonuniform screening of the external field. When the PV effect is neglected these solitons are screening solitons. When the external field is absent these solitons are PV solitons in short and open circuits and it is predicted that grey solitons exist in PV-PR crystals for short circuits. We also show theoretically that PV nonlinearity can be switched from self-defocusing to self-focusing (or vice versa) by adding the external field.
引用
收藏
页码：262 / 266
页数：5
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