Work

Accurate generation of a Gaussian beam in the HIE-FDTD method

Year: 2025

Type: article

Abstract: In this paper, we present a method for accurately integrating a tightly focused Gaussian beam into the hybrid implicit-explicit finite-difference time-domain (HIE-FDTD) method. Compared to the conventional FDTD, the proposed method significantly enhances computational efficiency. By introducing both electric and magnetic current sources, unidirectional beam propagation is successfully achieved. The accuracy and efficiency of the method are validated through numerical simulations and comparisons with FDTD results, analytical solutions, and plane wave expansion methods.

Source: Optics Express

DOI: 10.1364/oe.567132

Authors: Qin Nan, Chunhui Mou, Juan Chen, Kaihang Fan, Ao Peng, Lingpu Zhang

Institution: Xi'an Jiaotong University

Language: English

Topic: Electromagnetic Simulation and Numerical Methods

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Natural Science Foundation of China, National Key Research and Development Program of China