横向激发线偏振高斯光束的非傍轴传输

文章提出一种横向激发的任意线偏振高斯光束,该光束场量的模与传统的任意线偏振高斯光束具有相同的模,在源场区,其满足自由空间无源场的场方程。同时利用瑞利—索末菲衍射积分对该高斯光束的非傍轴传输特性进行了解析研究,给出了空间光强分布、束腰和远场发散角的解析通式,发现该类光束的远场光强呈一平顶空心光束。

Nonparaxial propagation of transverse-linearly-polarized Gaussian beam

The author bring forward a Gaussian optical beam in a transverse-linearly-polarized state,the expression of its module is the same as the scalar Gaussian beam.At the same time,this Gaussian optical beam can satisfy the Helmholtz Equation on time-harmonic electromagnetic transmission and also the source-free condition in a free-space vector field.At the same time,the propagation properties of the vectorial Gaussian optical beam in the far field are analyzed,including the irradiance distribution,beam widths and divergence angles,and found that the intensity of the beam distributes as a hollow beam in the far field.