fastämneslasrar
Fastämneslasrar, also known as solid-state lasers, are a type of laser that uses a solid, transparent material as the active laser medium. This solid material, often a crystal or glass, is doped with rare-earth elements or transition metals that provide the necessary energy levels for lasing. Common examples of host materials include ruby, neodymium-doped YAG (Nd:YAG), and titanium-sapphire. The dopant ions absorb energy, typically from a flashlamp or another laser, and then emit photons at specific wavelengths.
The laser cavity is usually formed by mirrors placed at either end of the solid-state medium. One