Undoubtedly, optical fiber has revolutionized the reform of the telecommunications industry. It has replaced traditionally used copper wires and has become the core part of modern communication.
With optical fiber, the communication system is a kind of communication system with light as an information carrier. The optical fiber transmits information in the form of electrical signals that are transformed into optical signals.
Due to the wide application of optical fiber in communication, the rapid development of fiber amplifiers and fiber lasers is seen. Other than this, the optical fiber system is used in medicine, sensing, and other fields.
When we discuss fiber lasers, high-power fiber lasers always take the limelight. But, many people don’t know why it happens. Also, some people haven’t used high-power fiber lasers yet.
They have a good beam quality
The high-power laser fibers achieve high brightness laser output because their waveguide structure determines that the fiber laser is easy to obtain single transverse mode output. Also, the fiber laser is little affected by external factors, leading to good beam quality.
They are highly efficient
By selecting a semiconductor laser, the fiber laser achieves high optical to optical conversion. The semiconductor laser emits a wavelength that matches the absorption characteristics of doped rare earth elements as the pump source.
The energy level structure is simple. So, a few phenomena such as up conversion, excited state absorption, and concentration quenching effectively store energy to achieve high-power operations.
They have a good heat dissipation characteristics
As a laser gain medium, the fiber laser uses slender rare earth-doped fiber. Also, the surface area and volume ratio of the fiber laser are very large. Compared to solid-state block lasers, the high-power fiber laser is 1000 times faster. The high-power fiber laser has natural advantages in heat dissipation capacity.
In low and medium power, special cooling of the optical fiber is not needed. But, special cooling plays an important role in high-power fiber lasers. It avoids the decline of beam quality and efficiency caused by thermal effects in solid-state lasers.
They have a compact structure and higher reliability
The fiber laser uses a small and soft fiber just like the laser gain medium. The small and soft fiber is conducive to compressing the volume and saving cost.
Using fused fiber optical products such as fiber Bragg grating, the all-optical fiber can be used as long as the products are fused. The immunity is high to environmental disturbance, high stability, and saves maintenance time and cost.
The high-power fiber laser is beneficial. You should just know to use it in the right way.