About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 65. Chapters: Chemical lasers, Excimer lasers, Gas lasers, Semiconductor lasers, Solid-state lasers, Maser, Laser diode, Quantum cascade laser, Fiber laser, List of laser types, Vertical-cavity surface-emitting laser, Dye laser, Nitrogen laser, Free-electron laser, McCumber relation, Disk laser, Nd: YAG laser, Ruby laser, Helium-neon laser, Blue laser, Diode-pumped solid-state laser, Carbon dioxide laser, Tunable laser, Krypton fluoride laser, Ion laser, TEA laser, ZEUS-HLONS, Trident laser, Laser diode rate equations, Quantum well laser, Ti-sapphire laser, Argon fluoride laser, European x-ray free electron laser, Distributed feedback laser, Solar-pumped laser, Solid state dye lasers, Potassium titanyl phosphate, Random laser, Hybrid silicon laser, Multiple-prism grating laser oscillators, X-ray laser, Chemical oxygen iodine laser, Fiber disk laser, Strontium vapor laser, Semiconductor ring laser, Vertical-external-cavity surface-emitting-laser, Er: YAG laser, Nanolaser, Gas dynamic laser, Copper vapor laser, Quantum dot laser, Far-infrared laser, Energy transfer upconversion, Hydrogen fluoride laser, Potassium aluminium borate, Nuclear pumped laser, Uaser, All gas-phase iodine laser, Tophat beam. Excerpt: The laser diode is a laser where the active medium is a semiconductor similar to that found in a light-emitting diode. The most common type of laser diode is formed from a p-n junction and powered by injected electric current. The former devices are sometimes referred to as injection laser diodes to distinguish them from optically pumped laser diodes. A laser diode is formed by doping a very thin layer on the surface of a crystal wafer. The crystal is doped to produce an n-type region and a p-type region, one above the other, resulting in a p-n junction, or diode. Laser diodes form a subset of the larger classification of semicon.
