Fiber lasers refer to lasers that use rare-earth-doped glass fibers as gain media. Fiber lasers can be developed on the basis of fiber amplifiers: high power density is easily formed in the fiber under the action of pump light, resulting in laser working material. The energy level "number inversion" can form laser oscillation output when a positive feedback loop (form a resonant cavity) is properly added.
A:The spot output from the optical fiber is generally a circular spot with a certain divergence angle. The specific spot size is related to the fiber core diameter, and the divergence angle is determined by the fiber numerical aperture. The common optical fibers are divided into single mode and multimode, the diameter of single mode core is μm from 2.9 to 9μm, the diameter of multimode core is μm from 50 to 400μm, and the numerical aperture is generally 0.15 NA and 0.22 NA. respectively The numerical aperture refers to the sinusoidal value of the maximum incident angle of the total reflection transmission of the beam in the fiber. It can be simply regarded as the divergence angle of the laser fiber .0.22 NA representing the divergence angle (half angle) about 12.5° and 0.15 NA representing the divergence angle about 8°.
A:All the lasers provided by box Optronics are based on the fiber coupling mode of single laser.
A:BoxOptronics maintains a large inventory which allows us to ship most of our products within 2-3 days of receipt of purchase order. In event that we are out of stock the lead time typically varies between 1 to 2 weeks. Lead time for special orders and non-standard wavelengths is between 3 to 4 weeks.
A:The laser beam directly output by the semiconductor laser light-emitting unit is an elliptical asymmetric Gaussian beam, which has a large divergence angle and extremely uneven spot. In some application fields, it must be shaped and spot uniformized. There are two commonly used shaping methods: optical lens shaping and fiber coupling shaping. Simple optical lens shaping can compress the beam into a rectangle, but the spot uniformity is poor and it is not flexible to use. Through fiber coupling, the optical spot output by the fiber is a circular symmetrical spot with good uniformity, and the beam quality is improved. At the same time, fiber coupling is an important means to achieve flexible laser transmission, which greatly enhances the flexibility and operability of semiconductor lasers. It is more flexible and convenient to use in medical, processing and other fields. Box Optronics focuses on fiber coupling and mainly provides fiber coupled semiconductor lasers.
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