A fiber laser source is a type of laser that uses optical fiber as the gain medium, where the light is amplified and the laser cavity is formed by the end faces of the fiber. It is different from traditional solid-state or gas lasers, which use a solid crystal or gas as the gain medium. Fiber laser sources can be classified into two main categories: Continuous Wave (CW) and Pulsed.

Continuous Wave (CW) fiber laser sources emit a continuous beam of light at a specific wavelength. They are used in a wide range of applications such as material processing, marking, cutting, welding, and micromachining. They are known for their high efficiency, good beam quality, and low maintenance. They are also very compact and can be easily integrated into various systems. They are available in different output powers, ranging from a few watts to several kilowatts, and in different wavelengths, such as infrared, near-infrared, and visible wavelengths. They can be operated in various modes such as single-mode, multimode, and polarization-maintaining. They can be used in a wide range of applications such as material processing, marking, cutting, welding, and micromachining.

Pulsed fiber laser sources emit light in short pulses, typically on the order of nanoseconds or picoseconds. These pulses can be used to achieve high peak power and high peak intensity, which is useful for certain applications such as micromachining, marking, and cutting. They are also widely used in scientific research and industrial applications.

Fiber laser sources are becoming increasingly popular due to their high efficiency, good beam quality, and low maintenance. They are also very compact and can be easily integrated into various systems. They are widely used in industrial, scientific, Renewable energy and medical applications.