Light amplification

Light amplification refers to the process of increasing the intensity of light. It occurs when light photons stimulate other atoms or molecules to emit more photons of the same wavelength and phase, effectively boosting the light's strength. This principle is crucial in technologies like lasers, where a small amount of light is amplified to create a powerful, focused beam. The process typically takes place in a gain medium, which can be a gas, liquid, or solid, and relies on energy input to excite the atoms, enabling them to release more light.