👉 Laser is a type of light that emits an electromagnetic wave, which can be represented as a series of pulses or beams. These waves are produced by a device called a laser diode and are used in various fields such as medicine, science, engineering, and technology. In a laser, the energy from the source (usually a semiconductor material) is converted into light. This process is known as excitation and can be achieved using different methods depending on the type of laser and its parameters. Common
