What are the good and bad laser pointers?
Red: a very cheap high powered laser, there are also ordinary lasers. The shorter red wavelengths are obvious, but the longer wavelengths are not too bright. Green: Very close to optimal visibility. Cats seem to prefer red. Blue: Visibility is very low compared to green. Compared with 670 nm (dark red), the visibility is the same or worse. The beam quality is poor. (Due to the smaller focus size and reduced aversion response). But the beam of the high blue laser pointer is very clear. Laser pointers are very popular on vacation due to their convenience, easy operation, and low cost. Laser pointers are widely used in theaters, parties, conferences, exhibitions, stadiums, theaters, auditoriums, game rooms, high-end nightclubs and entertainment venues. Why are they so popular? Here are some key points about the benefits of green lasers. The cost of green lasers is low, but the disadvantages are also obvious: the weight of the housing is heavier, about 60 kg per square meter. In stage applications, the outer shells of all laser pointer battery boxes are made of aluminum, which is not only light and thin, but also has better thermal conductivity.
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Using infrared laser with a wavelength of 808nm to excite the nonlinear crystal, produce 1064nm infrared light, and then multiply by the 532nm green light, which belongs to the solid-state laser. Some green lasers operate in pulsed or near continuous mode to reduce cooling problems and extend battery life. The workbench should be well lit, especially in the area where you use knives and electrical equipment (such as mixers and mixers). If you have directional spotlights, make sure they are positioned to illuminate your work space. The powerful 1000MW laser pointer can be useful inside the house. When you enter the room, the sensor detects your presence and activates the laser.
2021-11-22 06:28:24
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