Pulsed lasers are devices that emit light in short bursts or pulses rather than a continuous beam. These pulses can last from femtoseconds (one quadrillionth of a second) to milliseconds, allowing for precise control over the energy delivered. This characteristic makes pulsed lasers useful in various applications, including medical procedures, material processing, and scientific research. The ability to focus high energy in brief intervals enables pulsed lasers to cut, engrave, or modify materials with minimal heat damage. They are commonly used in fields such as ophthalmology for eye surgeries, manufacturing for precision cutting, and spectroscopy for analyzing materials.