How Solid-State Lasers Work
Solid state lasers change electrical or optical energy into a strong, focused light beam. The process starts when the pump source sends energy to the active medium. This energy excites the atoms in the gain medium. Their electrons move to higher energy states. This step is called pumping.
When enough atoms are excited, population inversion happens. This means more atoms are excited than resting. This is needed for the laser to make more light.
Next, stimulated emission starts. An excited atom meets a photon with the right energy. The atom drops to a lower energy state and gives off a new photon. This new photon is the same as the first one in color, direction, and phase. As photons bounce between the mirrors, they make more atoms give off matching photons. This creates a strong, single-color laser beam.
The optical cavity helps by making photons bounce back and forth. One mirror lets some of the light out as the laser beam. The result is a beam that is strong, thin, and one color.
Solid state lasers use energy well to make laser light. Diode-pumped solid state lasers match the pump light to the active medium. This lowers heat and makes them work better. These lasers can be almost 10% efficient . This is much better than old lamp-pumped lasers.
HeatSign uses advanced solid state laser technology in its marking machines . Their systems use third-generation solid state fiber lasers. These have small designs and steady performance. The active medium lets these machines mark metals and some plastics quickly and accurately.
Solid state lasers are known for being reliable and powerful. They can make very exact marks on many materials. Their design, with the active medium, pump source, and optical cavity, makes them a top pick for marking and other tough jobs.