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Issue:
1+1 D Sech Lossy Soliton in Strongly Nonlocal Media
Author(s):
WANG Xing-hua
,
XU Wei
,
WU Shi-min
,
LIU Meng-lian
Pages:
519
-
521,574
Year:
2007
Issue:
5
Journal:
JIANGXI SCIENCE
Keyword:
非线性光学
;
变分法
;
强非局域非线性介质
;
sech光束
;
小损耗
;
损耗孤子
;
Abstract:
运用变分法研究1+1维sech光束在存在小损耗强非局域非线性介质中的传输特性,得到了光束各参量的近似演化方程和束宽的近似演化规律以及一个临界功率.当初始功率大于临界功率时,束宽按准正弦和准余弦函数规律作准周期的压缩变化;当初始功率小于临界功率时,束宽按准正弦和准余弦函数规律作准周期的展宽变化;当初始功率等于临界功率时,可以得到束宽随传输距离缓慢展宽的准sech空间孤子.
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