Laser diodes All green lasers we provide have a wavelength of 520 nm and are direct diode semiconductor lasers. At present, most of the high-power green laser pointers on the market have a wavelength of 532nm, which is a DPSS (Solid State Diode Pumped) laser. Although this may seem like a small difference, in reality, there is a big difference between the two types of lasers. The 520nm green laser has a significant improvement in power, stability and durability compared to the 532nm green laser. As you can see, it takes a while for the laser to warm up and reach its maximum power. At the approximately 1000 second mark, you can see that the power output starts to drop. The maximum power has not been maintained for a long time.
First, you need to choose a green high powered laser, because the human eye can see green more easily. Red, purple, and blue are also visible, but green is easier to see and can be used at low power while providing better visibility. The visibility of a 5mW green laser is 5-10 times that of a 5mW red laser. Secondly, you should start with a 5mW-50mw laser pointer, because it has enough power to point to the object, and it can still be used safely without glasses.