摘要
为了解决材料表面结构对光子传播影响难计算的问题,采用拟蒙特卡罗算法。首先对材料的非线性吸收光分析;接着对左手材料折射率的空间分布进行周期性调制,使其不具有周期性结构;最后建立了拟蒙特卡罗模型。实验仿真得出入射光强趋于无穷大时存在激发态的非线性吸收现象,左手材料在中心频率及奇数倍频率附近透射率等于零,出现禁带,而在基频的偶数倍处光子禁带消失,拟蒙特卡罗算法的计算误差较小、处理时间较少。
In order to solve the influence of material surface structure of photon propagation hard computational problem,using Quasi Monte Carlo algorithm. First light absorption analysis of nonlinear material;followed by periodic modulation of the refractive index of the spatial distribution of the left-handed material,so that it does not have a periodic structure; finally established the Quasi Monte Carlo model. The experimental simulation of incident light tends to infinity the existence of nonlinear excitation state absorption phenomenon,left-handed materials in the vicinity of the center frequency and the odd times frequency transmittance is equal to zero,the forbidden band,and disappeared in the even number times of the fundamental frequency at the photonic band gap,Quasi Monte Carlo algorithm calculation error is smaller,less processing time.
出处
《功能材料与器件学报》
CAS
CSCD
北大核心
2014年第6期258-262,共5页
Journal of Functional Materials and Devices
基金
国家自然科学基金项目(编号:61404057)
河南省科技厅基础与前沿技术研究项目(编号:122300410210)
关键词
拟蒙特卡罗
表面结构
光子传播
Quasi quasi quasi Monte Carlo
Surface Structure
Photon Propagation.
