Pumping Pumping refers to the process of energizing the gain medium within a laser system to induce stimulated emission and generate laser light. In laser engraving, pumping mechanisms such as flashlamps, diode lasers, or other energy sources are used to excite atoms or molecules within the gain medium, raising them to higher energy states.
As the excited atoms or molecules undergo spontaneous emission, they release photons, triggering a cascade effect known as optical amplification, wherein additional photons stimulate further emissions. The pumping process continues until a population inversion is achieved, resulting in the generation of coherent laser light that is emitted through the laser resonator for engraving applications. |