介绍一种采用小孔光阑穿透来测量激光脉冲方向性的时间演化过程方法，并对放大倍率为Ｍ＝１０（振荡器Ｍ＝３０）的注入锁定铜激光器输出光脉冲方向性时间分辨过程进行了测量。结果表明：在激光脉冲的形成过程中，输出光方向性越来越好，相应发散角由～１．０ｍｒａｄ连续地减小到０．１２ｍｒａｄ。最后对实验结果进行了讨论。 A method of time evolution of laser pulse directivity using aperture aperture penetration is introduced. The time-resolved process of injection-locked copper laser output optical pulse with magnification M = 10 (oscillator M = 30) Measured. The results show that during the formation of laser pulse, the output light directivity is getting better and better, and the corresponding divergence angle decreases continuously from ~ 1.0 mrad to 0.12 mrad. Finally, the experimental results are discussed.