A Novel Three-Dimensional Wide-Angle Beam Propagation Method Based on Split-Step Fast Fourier Transform  

作　　者：臧维平 程化 田建国 

机构地区：[1]Key Laboratory of Weak Light Nonlinear Photonics (Ministry of Education), Teda Applied Physics School, Nankai University, Tianjin 300457

出　　处：《Chinese Physics Letters》2009年第2期119-122,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 60678025, the National Basic Research Programme of China under Grant No 2006CB921703, the Programme for New Century Excellent Talents in University and the Programme for Changjiang Scholars and Innovative Research Team in University.

摘　　要：A novel three-dimensional wide-angle beam propagation method based on the split-step fast Fourier transform is developed. The formulation is based on the three-dimensional Helmholtz wave equation. Each propagation step is performed by utilizing both the FFT and split-step scheme. The solution of Helmholtz wave equation does not make the slowly varying envelope and one-way propagation approximations. To validate the efficiency and accuracy, numerical results for a propagation beam in a tilted step-index optical waveguide are compared with other beam propagation algorithms.A novel three-dimensional wide-angle beam propagation method based on the split-step fast Fourier transform is developed. The formulation is based on the three-dimensional Helmholtz wave equation. Each propagation step is performed by utilizing both the FFT and split-step scheme. The solution of Helmholtz wave equation does not make the slowly varying envelope and one-way propagation approximations. To validate the efficiency and accuracy, numerical results for a propagation beam in a tilted step-index optical waveguide are compared with other beam propagation algorithms.

关 键 词：field emission molybdenum dioxide enhancement factor 

分 类 号：TN252[电子电信—物理电子学] TN911.72