摘要
利用银纳米线独特的等离激元激发和传播性质,观测了出射端光强随着激发端聚焦激光束数值孔径变化而变化的趋势.经过归一化后,发现依赖于垂直光传播方向偏振分量的光强度随着光数值孔径的增大而减小,为聚焦光束存在沿光轴方向偏振的理论提供了实验证据.
This paper implements silver nanowires＇ unique surface plasmon excitation and propagation properties to study how the output intensity from nanowire changes with the N.A. of the excitation light. Atier normalization, it is found that the intensity of the light polarized perpendicular to the light propagation direction decreases with increasing N.A., thus providing experimental evidence for the existence of light polarized along the propagation direction.
出处
《西南民族大学学报（自然科学版）》
CAS
2013年第3期391-395,共5页
Journal of Southwest Minzu University(Natural Science Edition)
关键词
银纳米线
激发
数值孔径
聚焦光束
偏振
silver nanowires
excitation
N.A.
focused laser beam
polarization
