Laser beams are coherent and focused light beams that have unique properties such as high intensity and spatial coherence. They are widely used in various fields, including telecommunications, material processing, medical imaging and surgery, measurement and instrumentation, and scientific research. Laser beams can be of different types and wavelengths, with each type having specific applications and characteristics. Researchers are continually exploring new ways to harness the power and precision of laser beams for a wide range of practical and technological advancements.