The stunning visual effects of laser lights originate from YAG solid-state laser technology, among which stage laser lights have become core equipment for performances due to their precise control capabilities. Their working principle involves exciting a Nd:YAG crystal rod with a krypton lamp to generate laser beams, which are converted into visible light through frequency conversion. A computer then controls the high-speed deflection of galvanometers (scanning speed up to 55,000 times per second) to project text, patterns, or dynamic effects. The key technical parameters of stage laser lights are particularly stringent: wavelengths (635nm for red, 532nm for green, 457nm for blue) must accurately match stage color requirements, while power (10W-20W as the mainstream for stages) and divergence angle (≤1.5mrad) directly determine the beam’s penetration and image clarity on stage. Compared with traditional stage lighting, stage laser lights offer advantages such as strong directionality, high color purity, and fast dynamic response. Their energy consumption is only 50% of LED stage lights with the same brightness, while their service life is 1.5 times longer, making them an energy-efficient solution for stage lighting.