Green laser including semiconductor pump all solid-state green laser and semiconductor green laser, using the original imported pump source, laser head with refrigeration and precise temperature control system, power supply with overcurrent, overheating protection. Laser with power stability, simple operation, reliable performance, long service life and other characteristics, the series of green laser products include high energy green laser, high power green laser, high stability green laser, low noise green laser, single longitudinal mode green laser five series, why there are green laser on the bridge? Free space output, fiber coupling (single mode fiber, multi-mode fiber, homogenized fiber) output.
Green laser is popular in recent years, technology by leaps and bounds, domestic has made great development, although it has been very popular abroad, but in the domestic market understanding level is still very narrow. All semiconductor lasers are produced by laser tube focusing, green light is different from red light is that green light does not directly emit green light laser tube, only through crystal conversion, and then expanded beam collimation to produce well-focused green light.
The green light module consists of laser crystal and nonlinear crystal combined together, in the laser resonator, the use of 808nm wavelength LD pump light through the gain of the laser crystal to generate 1064nm laser, and then through the frequency doubling of the nonlinear crystal can produce 532nm green laser. Green modules are similar to integrated circuits in electronic components, with modular, integrated characteristics, can be mass-produced, reduce costs. So let's talk about what are the advantages and disadvantages of green lasers?
What are the advantages and disadvantages of green lasers? Advantages of green laser:
1.The energy density of the laser beam is high, and laser cladding can be completed as long as less energy is injected. The parts have small heat affected zone and small deformation, so it is suitable for repairing some high-precision parts or parts with strict deformation requirements, such as fan rotor shaft and turbine rotor shaft.
2.the laser cladding dilution rate is low, and can be accurately controlled, the composition and performance of the cladding layer mainly depends on the composition of the cladding material. Therefore, the surface of the substrate can be modified by various materials with excellent properties; In particular, laser cladding technology can be used to repair some workpieces that cannot be achieved by conventional surfacing welding process, such as turbine engine blades and motor spindle.
3.the laser cladding layer is dense, fewer microscopic defects, the cladding layer and the substrate are metallurgical, high strength, so it can be used for surface strengthening and repair of parts under some heavy load conditions, such as the repair of large roll flat head, large gear, large crankshaft and other parts.
2. What are the advantages and disadvantages of green lasers? Disadvantages of green laser:
1, green laser is different from ordinary red laser, its biggest feature is small external interference, and high sensitivity, its output brightness is much higher than the red laser, for the general red laser brightness of ten times or more, so, in the general light source dim case can capture its track, especially at night the laser pointer to the sky irradiation, As far as your eyes could see, there was a bright green light piercing the sky.
2, 532nm wavelength: 532 wavelength pure green laser, easier to distinguish than the previous red light, whether indicating black and white or color patterns, will not be mixed with the original image, obviously highlight the focus of your indication.
3, the green laser module used by the green laser pointer is much more expensive than the red laser module used by the red laser pointer.
4, the technology used by the red laser module is more mature, there are many manufacturers, and the price is relatively cheap. The technology used by the green laser module has high requirements for materials, the price of materials is relatively expensive, and the manufacturers are relatively few, so the cost is relatively high. This is also the reason why green laser pens red laser pens are a lot more expensive.
Green lasers have many characteristics: First, the laser is monochromatic, or single-frequency. There are some lasers that can produce different frequencies at the same time, but these lasers are isolated from each other and are used separately. Second, laser is coherent light. The characteristic of coherent light is that all of its light waves are synchronized, and the whole beam is like a "wave train". Third, the laser is highly concentrated, which means that it has to travel a long distance before it will disperse or converge.
Green laser is a laser, no different from other lasers, but because the wavelength is different so the color is different.