The most widely used lasers today include: carbon dioxide lasers (CO2 Laser) and fiber lasers (Fiber Laser), with wavelengths of 10.6um and 1.07um, respectively, and belonging to the far-infrared and near-infrared regions. The majority of laser applications are in the power range of 10W-4KW, but there are also higher and lower power applications for civil and military or medical applications. In the general laser safety standards, more than 0.5W laser application system, has to implement the four types of laser safety standards, in the equipment management, safety protection, operation norms have strict requirements. Different wavelength spectra of lasers have different effects on body organs. Near-infrared and visible light can reach the retina directly, which can reach the retina directly and cause irreversible damage to the visual nerve. : Electromagnetic spectral region Wavelength range Affected organs UV radiation 200-400nm Cornea, crystals, skin UV-C 200-280nm Cornea and conjunctiva fully absorbed UV-B 280-315nm Basically fully absorbed resulting in corneal-conjunctival cataracts UV-A 315-400nm Crystals fully absorbed, cataracts formed Visible light 400-780nm Retina Near-infrared 780nm-1.4um retina, crystal, skin Infrared-B 1.4-3.0um cornea and skin Infrared-C 3.0um-1m cornea and skin From the above data it can be seen that fiber lasers are much higher than carbon dioxide lasers in the application of the laser safety standards, This information is provided by the Wuhan Farley Lai
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