1. Does the fiber laser have radiation and pollution?

Lasers can only produce visible or invisible lasers, which are trapped in optical fibers and cannot propagate to the surrounding environment. When the surrounding circuits operate at high frequencies, certain electromagnetic fields may be generated, but the energy of these electromagnetic fields is too small and the frequency is too low. It cannot propagate very far at all, and the radiation generated is only enough to interfere with surrounding electronic equipment.

2. Laser safety levels and hazards

The level of lasers is an international standard classification, which has been recognized by the scientific community worldwide. This is conducive to unifying the safety level of laser equipment and national trade. The classification is divided into: level 1, level 2, level 3, and level 4, a total of 4 levels. The higher the classification level, the greater the risk. Laser level regulations must be marked on the laser system with Roman numerals. All conventional laser products generally have classification labels. In addition to graphic and text warnings, the label also contains the following information: wavelength, total output power, and laser classification.

The following is a description of the four levels of lasers:

1. Safety level: Level 1. Laser power: less than 0.5 mW, safe laser, Class I laser will not cause harm to human health under normal use conditions, but such products must also ensure the use of laser radiation to prevent workers from entering the laser radiation area during work. Design.

2. Safety level: Class 2. Laser power: 1 mW, this level of laser has low-power visible laser. Humans can protect themselves by blinking and reflecting strong light, but direct viewing for too long can be dangerous. Some need to post warning signs.

3. Safety level: Class 3. The third level is divided into 3a and 3b.

Class 3a laser, laser power: 1mW to 5mW, Class 3a laser is the same as Class II, and a warning sign needs to be posted at the laser light outlet. The human eye only sees for a short time, and the protective reflection of the human eye to light will play a certain protective role. However, if the light spot enters the human eye when it is focused, it will cause damage to the human eye.

Class 3b laser, laser power: 5 mW to 500 mW, if directly observed or diffusely reflected, it may cause damage. Class 3b lasers are usually marked with the word "danger". Sign, although they are harmful to the eyes, if the light spot is not focused, the risk of fire or skin burns is small. However, it is recommended to wear goggles when using this level of laser.

4. Safety level: Class 4. Laser power: above 500mW, this level of laser is very harmful to the eyes and skin, and both direct reflection and diffuse reflection can cause damage. All Class 4 laser devices must be marked with the word "danger". Symbol. Class 4 lasers can also damage materials near the laser and ignite flammable substances. When using this type of laser, please wear goggles according to Class 3b.