Laser guns are advanced weapons that use focused beams of light, known as lasers, to deliver energy to a target. Unlike traditional firearms that use bullets, laser guns emit concentrated light that can cause damage through heat or impact. They are often depicted in science fiction, but real-life applications include military and industrial uses, such as cutting and welding. These devices operate on principles of optics and photonics, utilizing components like lasers and optical lenses to direct the beam. While still largely experimental, laser technology continues to evolve, with potential future applications in defense and space exploration.