A semiconductor laser is a kind of laser that matures earlier and progresses faster. It uses the mirror surface formed by the cleavage plane of the semiconductor crystal as a resonant cavity to amplify the light oscillation, feedback, and light generated by the light, and output the laser with a wide wavelength range. The utility model has the advantages of simple production, low cost, small volume, light weight and long service life. Therefore, the variety has developed rapidly and has a wide application range, and has more than 300 kinds. Compared with traditional lasers, design and construction mode tunable lasers are one of the most important research tasks, and an effective way to expand the range of laser applications. At present, the R&D personnel regulate the laser mode structure through semiconductor energy band engineering, the self-absorption effect of the material itself, and the Burstein-Moss (BM) effect under the participation of plasmons. However, these methods of modulation are not reversible, and the implementation of dynamic, sustainable laser mode structures still lacks effective research protocols. Recently, Wang Zhonglin, Pan Caofeng and Lu Junfeng of the Institute of Nano-Energy and Systems, Chinese Academy of Sciences, organically combined the piezoelectric properties of the ZnO optical microcavity and its laser mode, and the ionic polarization inside the ZnO cavity crystal generated by external mechanical strain. Change the refractive index to achieve dynamic control of the coherent laser. ZnO has a large bandgap and exciton binding energy, high transparency, and excellent room temperature luminescence. At room temperature, excitons can be stably present in ZnO, which is an ideal material for achieving ultraviolet spontaneous and stimulated radiation at room temperature or higher, and is highly prominent in obtaining low-value, high-quality UV lasers. The intrinsic physical advantage. In addition, the non-centrosymmetric wurtzite structure ZnO micro/nano material also has special piezoelectric properties. When the material is subjected to external stress, the ionic polarization inside the crystal causes the dielectric constant of the medium to change, which is effective for the refractive index of the material. Regulation. It is understood that the researchers systematically analyzed the influence of strain on the refractive index of ZnO, established the correspondence between strain and mode movement, and obtained super-precision stress sensing, which is spontaneous compared with the energy band caused by the piezoresistive effect. The spectral resolution of the radiation spectrum is increased by an order of magnitude. The research results provide an effective method for dynamically regulating coherent light sources, and provide a new idea for developing a color-resolved stress sensing component. Metal Sheet Laser Cutting Machine What is the metal sheet Fiber Laser Cutting Machine? Metal Sheet Laser Cutting Machine,Fiber Sheet Laser Cutting Machine,Fiber Laser Cutting Machine,Cnc Fiber Laser Cutting Machine,Fiber Laser Cutting Machine For Metal,1000W Fiber Laser Cutting Machine,3015 Fiber Laser Cutting Machine Jinan Transon Cnc Equipment Co., Ltd. , https://www.csjiguang.com
Metal sheet laser cutting machine can only cut metal material in sheet. If you want cut metal tube, we have a special metal tube fiber laser cutting machine. If you want cut both metal sheet and metal tube, we also have metal Tube And Plate Fiber Laser Cutting Machine. It has the advantages of fast cutting speed, high precision, small area of heat affected area, stable performance, guaranteed continuous production, not easy to deform, smooth and beautiful cut seam, and no need for subsequent processing. Compared with other metal laser cutter, fiber laser cutter can complete the processing of various complex structures. As long as it can draw any image on the computer, the machine can complete the processing without opening the mold, and the product can be produced immediately. That is, new products can be developed quickly and costs can be saved. No matter how complicated the process requirements are, fiber laser cutting machines can do it.
Therefore, with the above processing advantages, fiber laser cutting machines are widely used in advertising sign production, sheet metal structure, high and low voltage electrical cabinet production, textile machinery parts, kitchenware, automobiles, machinery, elevators, electrical parts, spring sheets, subway parts, etc.
Why to choose the fiber laser cutting machine?
1. High cutting accuracy: The positioning accuracy of the metal laser cutter reaches 0.05 mm, and the repeated positioning accuracy reaches 0.03 mm.
2. Narrow slit: The width of the slit is generally 0.10-0.20 mm.
3. Smooth cutting surface: There is no burr on the cutting surface, and the roughness of the cut surface is generally controlled within Ra 6.5.
4. Fast cutting speed: the cutting speed can reach 10 m / min, and the maximum positioning speed can reach 30 m / min.
5. Good cutting quality: Adopting non-contact cutting, the cutting edge is affected by heat little, there is basically no thermal deformation of the work piece, to ensure that the work piece is not scratched, and the slitting generally does not require secondary processing.
6. Laser processing has good flexibility: the fiber laser cutting machine can process arbitrary graphics, and it can cut pipes and other profiles without being affected by the shape of the work piece.