Semiconductor Laser

A semiconductor laser is a device that produces focused, coherent light using a semiconductor material, similar to the material in computer chips. When electrical current passes through it, electrons combine with holes, releasing energy as light—a process called electroluminescence. This light is then amplified within the device, resulting in a narrow, intense laser beam. Semiconductor lasers are compact, energy-efficient, and widely used in applications like fiber-optic communications, barcode scanners, and laser pointers. Their ability to produce precise, stable laser light makes them fundamental components in many modern electronic and communication systems.