diodlaser
A diode laser, or laser diode, is a semiconductor device that emits laser light when an electric current passes through it. The active medium is a p-n junction, engineered to provide optical gain and feedback in a resonant cavity, producing coherent light. Diode lasers include edge-emitting varieties and vertical-cavity surface-emitting lasers (VCSELs).
Construction and operation: The active region is usually a multiple quantum well stack of III-V materials such
Wavelengths and performance: Diode lasers span visible to near-infrared light. Common telecom devices operate around 850,
Variants and usage: Edge-emitting diodes are compact and often used in modules with external optics; VCSELs
Safety and reliability: Diode lasers require safeguards for eye and skin exposure, with regulatory standards governing