摘要
基于电磁光束的矢量结构理论、傍轴近似和数学技巧,分析了共焦腔在近场的麦克斯韦方程组的精确解,即TM(横磁)高斯光束的矢量结构特性,导出了矢量结构TE项和TM项的解析表达式.描绘了TE项和TM项以及整个光束在近场的幅度分布和位相分布,揭示了傍轴TM高斯光束的矢量结构组成.这一研究有助于深化对傍轴激光束的内在矢量本性和传输特性的认识.
sed on the theorem of the vectorial structure of electromagnetic beam,the paraxial approximation and the mathematical techniques,that is the characteristics of the vectorial structure of a TM（transversal magnetic） polarized Gaussian beam,the rigorous solution of Maxwell’s equations for a confocal resonator are investigated in the near field.The analytical expressions of the TE and TM terms are derived in the near field.The distributions of amplitude and phase of the TE term,the TM term and the whole beam are depicted in the near field,which reveals the composition of a paraxial TM polarized Gaussian beam in the near field.This research is helpful to recognize the internal vectorial nature and propagation characteristics of paraxial laser beams.
出处
《浙江大学学报（理学版）》
CAS
CSCD
北大核心
2011年第4期395-399,404,共6页
Journal of Zhejiang University（Science Edition）
基金
国家自然科学基金资助项目(10974179)
浙江省自然科学基金资助项目(Y1090073)
关键词
矢量结构
TM高斯光束
近场
vectorial structure
TM polarized Gaussian beam
near field
