Gaussian Beam-Based Hybrid Method for Quasi-Optical Systems
Gaussian Beam-Based Hybrid Method for Quasi-Optical Systems
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DOI：
10.1109/tap.2011.2165467
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发表时间：
2011-10
影响因子：
5.7
通讯作者：
A. Rohani;S. Chaudhuri;S. Safavi-Naeini
中科院分区：
文献类型：
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作者：
A. Rohani;S. Chaudhuri;S. Safavi-Naeini
提出了一种分析无源、准光波或无界波结构中电磁传播的混合方法。该方法结合了高斯光束跟踪(GBT)、Gabor展开和时域有限差分方法(FDTD)。首先利用Gabor展开将系统的输入展开为高斯光束之和(GBs)。产生的GBs在系统内部启动，并使用GBT进行跟踪/跟踪。对于不再适用GBT的结构，GB形成FDTD例程的输入。FDTD的输出可以利用Gabor展开进一步扩展，所产生的光束可以通过系统传播。
A hybrid method for analysis of electromagnetic propagation in passive quasi-optical or unbounded wave structures is presented. This method is a combination of Gaussian beam tracing (GBT), Gabor expansion, and the finite-difference time-domain method (FDTD). The input to a system is first expanded into a sum of Gaussian beams (GBs) using the Gabor expansion. The resultant GBs are launched inside the system and tracked/traced using the GBT. For structures where GBT is no longer applicable, the GBs form the input of an FDTD routine. The output of the FDTD can further be expanded using Gabor expansion, and the resultant beams can be propagated through the system.