轴向相干叠加高斯光束的M^2传输因子

PROPAGATION FACTOR M^2 OF AXIAL COHERENT SUPERPOSITION OF GAUSSIAN BEAMS

本文分别用标量叠加和矢量叠加的方法 ,对由两个束腰位置不同的高斯光束相干叠加而成的光束的传输特性进行了研究 ,结果表明 ,这种光束的传输因子M2 不再是常数 。

It is used the methods of scalar superposition and vector superposition to study the propagation characteristics of beams formed by axial superposition of two Gaussian beams with different waist positions.The results show that,the propagation factor M 2 is changing with propagation distance.