If the laser output window mirror is polluted, how to deal with it? And whether can wipe it with cotton swabs? – DaviLaser

Wiping with cotton swabs will damage the output window mirror. If the front mirror is only attached a small number of particles, and the coating of the mirror has not burnt, then try to use nitrogen with a purity of 99.95% to wipe the mirror. It is do necessary to unplug the power supply before …