The results of the experiment agree with the theory.TEM00 mode output in which the ellipticity is 0.98 and M2 is 1.01 was obtained.

• 利用实验结果指导腔调节，可使泵浦光轴线与几何腔轴精确重合，获得了椭圆率为0.；98、M2因子为1