Basically these two green laser pointer need to be used in many applications: one is used to convert electricity into a laser emission and the other is used to enhance the brightness of the laser emission. Diode-pumped solid-state laser. In the late 1980s, the use of semiconductor lasers to pump solid-state lasers began to gain popularity in commercial applications.
Diode-pumped solid-state lasers (DPSSL) have greatly reduced the size and complexity of thermal management systems (mainly circulating coolers), and have obtained modules that traditionally incorporate arc lamps for pumping solid-state laser crystals. The selection of semiconductor laser wavelengths is based on their overlap with the spectral absorption characteristics of solid-state laser gain media; compared with the wideband emission spectrum of arc lamps, the thermal load is greatly reduced.
Due to the popularity of 1064nm neodymium-based lasers, for more than 20 years, the pumping wavelength of 808nm has become the largest wavelength in semiconductor green laser pointers. With the improvement of the brightness of multimode semiconductor lasers and the ability to stabilize narrow emission line widths with bulk Bragg gratings in the middle of 2000, the second generation of improved diode pumping efficiency was achieved.