gas laser

A gas laser is a device that produces a laser beam using a gas as its active medium. When electricity or another energy source energizes the gas molecules, they emit light in a very specific wavelength. This light is then amplified and focused into a narrow, powerful beam through a process called stimulated emission. Gas lasers, such as helium-neon or carbon dioxide lasers, are used in various applications from cutting and welding to scientific research, because they produce precise, coherent, and intense light suitable for many professional uses.