亮点论文：李孝峰组在APL发表论文
时间: 2015-07-25 作者: 浏览次数: 1595
李孝峰组在APL发表论文
标题：Plasmon gapmode-assisted third-harmonic generation from metal film-coupled nanowires
作者：Ke Li, Xiaofeng Li*, Dang YuanLei, Shaolong Wu, and Yaohui Zhan
摘要：
A numerical investigation on the third-ordernonlinear optical properties of a plasmonic system composed by metalfilm-coupled nanowires is reported. The linear and nonlinear opticalcharacteristics are studied by finite-difference time-domain (FDTD) method. Tosubstantially improve the nonlinear effect, the geometric parameters of thesystem are carefully engineered to excite strong plasmon gap resonance withdramatically enhanced electric field intensity at the gap between the nanowiresand the film. The third-harmonic generation (THG) property is examined bynonlinear FDTD simulation. It shows that the THG efficiency estimated from thenonlinear optical absorption can be ∼1 × 10−5under an incident power density of 5.2 GW/cm2. Plasmonic resonanceis necessary to achieve highly efficient THG since the system on resonanceshows the THG intensity 4 orders of magnitude higher than that of anoff-resonance system.
原文链接：http://scitation.aip.org/content/aip/journal/apl/104/26/10.1063/1.4886409
标题：Plasmon gapmode-assisted third-harmonic generation from metal film-coupled nanowires
作者：Ke Li, Xiaofeng Li*, Dang YuanLei, Shaolong Wu, and Yaohui Zhan
摘要：
A numerical investigation on the third-ordernonlinear optical properties of a plasmonic system composed by metalfilm-coupled nanowires is reported. The linear and nonlinear opticalcharacteristics are studied by finite-difference time-domain (FDTD) method. Tosubstantially improve the nonlinear effect, the geometric parameters of thesystem are carefully engineered to excite strong plasmon gap resonance withdramatically enhanced electric field intensity at the gap between the nanowiresand the film. The third-harmonic generation (THG) property is examined bynonlinear FDTD simulation. It shows that the THG efficiency estimated from thenonlinear optical absorption can be ∼1 × 10−5under an incident power density of 5.2 GW/cm2. Plasmonic resonanceis necessary to achieve highly efficient THG since the system on resonanceshows the THG intensity 4 orders of magnitude higher than that of anoff-resonance system.
原文链接：http://scitation.aip.org/content/aip/journal/apl/104/26/10.1063/1.4886409