It is shown that the thermal effect decreases the peak intensity and beam focusability in the far field.
结果表明：热效应使远场光束的峰值光强和可聚焦能力下降。
Three dimentional beam profiles on thefocal plane are showed. The central peak intensity and width of the beam spot are given.
给出了高斯参数与中心峰值强度及光点直径的定量关系；
The random aberration of each beam reduces peak intensity of their far-field combination spot, and makes it dispersion.
子束随机像差降低了合成光束的远场光斑峰值功率，并引起光束的弥散。
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