环形孔径高斯光束的远场特性

Far Field Characteristics of Annular Aperture Gaussian Beam

讨论环形孔径高斯光束的远场光斑能量分布，并给出拟合表达式。首先推导光束没有抖动时远场光斑的光能分布表达式，然后研究各种不同中心遮拦和不同光束截断比，在有以及没有激光束抖动的情况下，对高斯光束的远场环围能量分布变化的影响。

The energy distribution of far field spot for annular aperture Gaussian beam is discussed and the fitting expression is given.The light energy distribution expression for far field spot without jitter is derived.Then the influence of various different central obscurations and the truncation ratio for the different beams on the far field annular energy distribution of Gaussian beam under the conditions with and without jitter are investigated.