Safety measures in the laser laboratory

by:LASERRPAIR     2020-06-15
Laser safety and classification When using lasers, follow safety regulations and select appropriate protective equipment. The human eye is easily injured, and extremely low-intensity laser radiation may cause damage to it. HENAI provides a series of laser safety accessories that can be used to reduce accidents or reduce risks. Lasers in the visible and near-infrared spectral ranges are most likely to cause retinal damage, because the cornea and lens fully transmit at these wavelengths, and the lens focuses the laser energy onto the retina, and retinal damage cannot be repaired. Safety measures and laser safety accessories When adjusting the laser beam with a power that is not negligible (that is,> 1 level), Henai recommends that you wear laser safety glasses at all times, because metal objects (such as a screwdriver) may accidentally change the beam direction. Laser goggles with specific wavelengths should be clearly placed near the laser equipment. Wearing goggles can avoid accidental reflection beam damage. The goggles are marked with a wavelength range that can be protected and the minimum optical density within that range. Laser protective curtains and laser protective cloth can protect other areas of the laboratory from high-energy lasers. The light-shielding material can block direct and reflected light beams emerging from the experimental device area. The optical equipment can be built in the Herney's enclosure system to isolate or reduce the harm of the laser. Lasers with pigtails need to be turned off before connecting or disconnecting fiber connectors, especially lasers with a power above 10 mW. All laser beams should end at the edge of the table, and the laboratory door should be closed when using lasers. Do not place the laser beam at eye level. Experiment on the optical platform so that all laser beams propagate horizontally. Do not wear unnecessary reflective objects (such as reflective jewelry such as rings and watches) when working near the optical path. Note that there may be reflected light on the front or back surface of the lens and other optical components. Set the laser power to the minimum value required by the application. If possible, reduce the output power when adjusting the optical path. Use optical shutters and filters to reduce beam power. Place appropriate warning signs or labels near laser equipment and laboratories. When operating a 3R or 4 class laser, use a light box with a laser safety sign, that is, such a laser requires a safe interconnection device. Do not use laser observation screens instead of light traps.
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