Fiber-Optic Laser
Fiber laser refers to a laser that uses rare earth-doped glass fiber as the gain medium. Fiber laser can be developed on the basis of fiber amplifier: under the action of pump light, high power density is easily formed in the fiber. The laser energy level of the laser working substance "inverts the number of particles", and when properly added to the positive feedback loop (forming a resonant cavity), the laser oscillation output can be formed.
The application range of fiber laser is very wide, including laser fiber communication, laser space remote communication, industrial shipbuilding, automobile manufacturing, laser engraving laser marking laser cutting, printing roll, metal non-metallic drilling / cutting / welding (brazing, quenching ) Water, cladding and deep welding), military defense security, medical equipment and equipment, large-scale infrastructure, as a pump source for other lasers, etc.
Features
(1) The beam quality is good.
(2) High efficiency.
(3) Good heat dissipation characteristics.
(4) Compact structure and high reliability.
Advantage
As the representative of the third generation laser technology, fiber laser has the following advantages:
(1) The manufacturing cost of glass optical fiber is low, the technology is mature and the miniaturization and intensification advantages brought about by the optical fiber can be wound;
(2) The glass fiber does not require a strict phase difference matching like the crystal for the incident pump light. This is due to the wide absorption band caused by the non-uniform broadening caused by the Stark split of the glass crystal;
(3) The glass material has a very low volume-to-area ratio, fast heat dissipation and low loss, so the conversion efficiency is high and the laser threshold is low;
(4) Multiple output laser wavelengths: This is because the energy level of rare earth ions is very rich and there are many types of rare earth ions;
(5) Tunability: Due to the wide energy level of rare earth ions and the broad fluorescence spectrum of glass fibers.
(6) Because there is no optical lens in the resonant cavity of the fiber laser, it has the advantages of no adjustment, maintenance, and high stability, which is unmatched by traditional lasers.
(7) Fiber export, can easily use laser energy for various multi-dimensional arbitrary space processing applications, making the design of mechanical systems very simple.
(8) Competent for the harsh working environment, with high tolerance to dust, shock, shock, humidity, temperature.
(9) No need for thermoelectric cooling and water cooling, just simple air cooling.
(10) High electro-optical efficiency: The comprehensive electro-optical efficiency is as high as 20% or more, which greatly saves power consumption during operation and saves operating costs.
(11) High-power, commercial fiber laser is six kilowatts. [1]
Application
1. Marking application
2. Application of material handling
3. Application of material bending
4. Application of laser cutting
5. Laser Communication