摘要
研究了单孤子在深聚焦系统中焦平面上的强度分布。该孤子是微分非线性薛定谔方程(DNLSE)非零边界条件的解。分析了不同孤子参数和深聚焦系统不同数值孔径的条件下亮、暗孤子的聚焦特性。仿真结果表明,暗孤子的聚焦特性随孤子参数具有周期性,亮孤子比暗孤子具有更好的聚焦性,单孤子的聚焦点随孤子参数会发生位移,这种聚焦后的位移特性为光路控制提供了可能。
We studied the intensity distribution of single soliton at the focal plane in tight focusing system. The soliton is an analytical solution of differential nonlinear Schrdinger equation （DNLSE） with non-vanishing boundary condition. Bright and dark solitons are considered for different soliton parameters and different numerical apertures of the tight focusing system. The simulation result shows that the focusing property of dark soliton has a good periodicity with the soliton parameter, the bright soliton has a better focusing property than the dark soliton, and the focal spot of the soliton will shift by changing the soliton parameter, which provides a possible application in optical guiding.
出处
《激光与光电子学进展》
CSCD
北大核心
2013年第6期76-82,共7页
Laser & Optoelectronics Progress
基金
国家自然科学基金(60978010
61275124
61205121)
浙江省教育厅自然科学基金(Y201225146)资助课题
关键词
成像系统
光孤子
数值孔径
深聚焦
光路控制
imaging systems
optical soliton
numerical aperture
tight focusing
optical guiding
