激光与光电子学进展, 2011, 48 (3): 032601, 网络出版: 2011-02-28
非傍轴高斯激光束电磁场研究
Study on Nonparaxial Gaussian Laser Beam
衍射光学 非傍轴高斯光束电磁场 Weniger变换 麦克斯韦方程组 diffraction optics nonparaxial Gaussian laser beam Weniger transformation Maxwell equations
摘要
采用Weniger变换法消除了Lax级数场的发散性，获得收敛的Weniger变换场(WTF)。通过与严格满足麦克斯韦方程组的数值电磁场相比较，比较了不同聚焦尺寸下Weniger变换场和复源点球面波场(CSPSWF)的准确性。计算结果表明，当光束聚焦半径大于2.23倍波长时，两者是一致的，而当光束聚焦到更小尺寸时，Weniger变换场更为准确。
Abstract
The divergence of Lax series field is eliminated by using Weniger transformation. The Weniger transformation field (WTF) is compared with the complex-source-point spherical wave field (CSPSWF) obtained by numerical simulation, which strictly satisfies the Maxwell equations. The results show that WTF accords with CSPSWF as the beam waist radius w0>2.23λ (beam wavelength), while WTF is more accurate than CSWF as w0<2.23λ.
李亚东, 栗建兴, 臧维平, 田建国. 非傍轴高斯激光束电磁场研究[J]. 激光与光电子学进展, 2011, 48(3): 032601. Li Yadong, Li Jianxing, Zang Weiping, Tian Jianguo. Study on Nonparaxial Gaussian Laser Beam[J]. Laser & Optoelectronics Progress, 2011, 48(3): 032601.
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