【摘要】 本文利用数值计算研究了 Bessel光束的传播特性及参量对其的影响 ,发现 Bessel光束的最大无衍射距离与光矢量横向分量系数 kr 成反比 ,而与光阑半径 R成正比。最后 ,得到了一个计算最大无衍射距离的经验公式更多还原

【Abstract】 The propagation properties of Bessel beams are numerically calculated.And then we calculated the effect of parameters both k r and R.Mainly find that the non diffracting distance is in inverse proportion to the parameter k r and nearly in direct proportion to the R.Finally,we get a formula about the non diffracting distance.更多还原