There are currently three colors of laser pointers commonly used in the market. They are red, blue, and green. The wavelength range of red light is 650nm~660nm, blue light is 445nm~450nm, and green light is 515nm~520nm. In addition to these three, there are red and green light. Wait.
Red laser pointer: the most common and simplest one. Mainly there is a red light-emitting diode, and the price is also the cheapest. The structure is the simplest. At present, diode-pumped solid-state laser diodes have emerged, which can be developed into high-quality, narrow-band lasers through some technologies.
Green laser pointer: It belongs to a solid-state laser. This kind of laser pointer is loved by astronomy enthusiasts. It can be used in dark conditions but does not require much power. Some green Laser pointer can extend battery life when used in pulse mode.
Blue laser pointer: can be used for the production of semiconductor diodes. The earliest was 473nm. With the development of technology, some factories also produced blue laser modules for mass storage devices. High output can be used as KTP crystal.
The above are several different colors of laser pointers. With the development of current technology, the colors of laser pointers are also increasing.
