A *laser* (abbreviation for "Light Amplification by Stimulated Emission of Radiation") is a device that amplifies and generates light by [[Stimulated Emission|stimulated emission]] of radiation. It produces a [[Coherence|coherent]] and [[Monochromatic Light|monochromatic]] beam of light. In contrast to regular light as produced by a lightbulb, for example, laser light only contains a single frequency. While a light bulb creates a broad spectrum, laser light only contains a single frequency/color of light, it is [[Monochromatic Light|monochromatic]]. ![[laser.excalidraw.light.svg]] Lasers are used in various fields such as medicine, communication and measurement technology. The long [[Coherence Time|coherence time]] enables high precision experiments and [[Quantum Technologies|quantum technologies]] which rely on [[Quantum Information|quantum information]]. >[!read]- Further Reading > - [[Light]] > - [[Spontaneous Emission]] > - [[Stimulated Emission]] >[!ref]- References