Semiconductor lasers

Semiconductor lasers are devices that generate coherent light—meaning the light waves are synchronized—using semiconductors like those in computer chips. They work by passing electrical current through a special material, which excites electrons. When these electrons return to a lower energy state, they release energy as light. This light is amplified within the semiconductor, producing a focused, intense beam. Semiconductor lasers are compact, efficient, and used in applications like barcode scanners, CD/DVD players, laser pointers, and fiber optic communications, making them versatile tools for transmitting data and producing precise laser beams.