The photon lifetime is very short, and it is generally an instantaneous effect. However, secondary damage to the laser pointer cannot be ruled out. Just like the sun may induce skin cancer, short-wavelength laser irradiation may have a similar effect for a long time, but this situation has not been reported. While collecting or playing with the laser sword, how should we safely control it? Just like football fans irradiating players with laser pointers, ordinary lasers only cause discomfort. However, high power will cause serious damage to the eyes, and different types of professional goggles should be equipped according to different wavelengths of the laser. Be sure to avoid direct laser exposure to the eyes. At the same time, since the laser can ignite the paper, the corresponding fire prevention measures must be adequate.
Can the laser sword be used for combat? As a manifestation of a laser pointer. How will the future application of laser swords develop? Because laser technology is precise enough, many manufacturing industries have already applied it. It should be said that laser cutting, laser welding, laser engraving, and other technologies have long been commercialized. Since it is not as practical as other large lasers in industrial applications. Can it appear in the military field as a weapon like Star Wars? There are laser weapons. But there is no need to be a sword. The United States has also been developing weapons such as laser pointers for missiles. But it should not be put into actual combat, or it is still in the experiment.