چكيده به لاتين
Lasers are devices that emit light in batches of parallel beams of the same wavelength and have different types including solid state lasers, gas lasers, liquid lasers, semiconductors, chemical lasers, etc. for medical, military, and other applications. They have many industries. From these categories, we have chosen diode lasers or semiconductors. The procedure is as follows: first, the Gallium Nitride material, its properties, crystal structure, advantages and disadvantages of its use and its energy gap are examined, then we introduce and operate diode lasers, which are based on production and recombination. Electrons and holes in the semiconductor discharge region, diffusion, consensus, and intensification of photons and light beams are coherent and wavelengths, Then, specifically on the evolution of Gallium Nitride lasers and the changes that have been made over time, such as adding Aluminum or Indium to this semiconductor for multilayer or hetero-joining the semiconductor by putting together two different crystal structures that bond. Gaps do not have the same energy. And all the work that is done to reduce the laser threshold current density or increase the laser output power.
