What is mode shift? Is this normal?

A mode shift may occur under extreme temperatures. If your laser unit is too hot or too cold, the beam may appear unstable and shift modes causing a secondary dot to appear. A mode shift may occur during the first several seconds of using your laser unit. As your laser “warms up” and returns to room temperature, the beam should return to normal mode, TEM00. The normal operating temperature of all Wicked Laser products is 10ºC ~ 40ºC. Using your laser unit beyond these parameters will damage your laser beyond repair.

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