CR35 laser tube light flickers very frequently

1.Problem description:After using the CR35 laser tube for several times, it was concluded that the work was stopped, and the engraving was still continuing, but the light flickered very frequently, and the current situation was not changed after increasing the power.
2.Solution:Frequent laser flicker during engraving is normal, if the power is unstable, it may be a stability problem (light path).