The best choice-green laser pointer

A yellow laser pointer with a wavelength of 593.5nm appeared on the market. Based on DPSS technology, two green laser pointer with wavelengths of 1064nm and 1342nm are obtained by adding nonlinear crystals. The complexity of the process makes the yellow laser pointer unstable and low efficiency. The output power of the temperature change is 1-10mW, and the mode jumps whether it is overheating or overcooling. This is because the size of the laser pointer does not provide the required temperature stability and component cooling. Under no circumstances should you look directly at the laser beam. Even if this is a low-power laser pointer, you don't want to risk it with your eyes. Looking directly at the beam, even for a few seconds, may damage the retina. Never accept and refuse to look at the laser pointer. In fact, only when a bright laser is directed at the human body, especially the eyes, a Class 3 or Class 4 laser pointer is dangerous. The higher the power, the shorter the exposure time to cause damage. Avoiding laser beams is like preventing fire from burning you. This is enough to ensure your safety. If you need to watch the laser for a long time, professional laser glasses will be a bonus for your eye safety.