【摘要】 得到了一个计算最大无衍射距离的经验公式 ,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 ,并利用数值计算研究了 Bessel光束的无衍射距离与参量之间的关系更多还原

【Abstract】 We numerically studied the relation between the non diffracting distance of apertured Bessel beams and the parameters. Mainly find that the non diffracting distance is in inverse proportion to the parameter k r and nearly in direct proportion to the R. And then, we get a formula about it.更多还原