Laser Diode USA - Photography Terms & Glossary

Glossary Of Laser Engraving and Cut Terms [1]

Laser Diode A laser diode, also known as a semiconductor laser, is a compact and efficient semiconductor device that generates coherent light through the process of stimulated emission. Laser diodes are widely used in various applications such as telecommunications, optical storage, barcode scanning, laser printing, medical devices, sensors, and illumination. Laser diodes consist of a semiconductor chip composed of layers of p-type and n-type semiconductor materials doped with impurities to create a pn junction.

When current is applied to the diode, electrons and holes recombine in the pn junction, emitting photons that are amplified as they reflect between the diode's mirrored ends, resulting in laser emission. Laser diodes are characterized by their small size, low power consumption, fast modulation rates, and high efficiency, making them ideal for compact and portable laser systems. Laser diodes are available in various wavelengths, power levels, and packaging configurations to meet the requirements of specific applications, ranging from visible red and infrared to ultraviolet wavelengths.