The current controls can show that the sale of laser Pointers will not be completely banned, as they will not completely ban any type of laser pointer. Only applicable to the input, supply and acquisition of laser Pointers with an output power greater than 1 milliwatt, and to the possession of Green laser pointer in a public place (without good reason). These controls basically make high-power laser Pointers harder to get because people need to prove why they need them. Low power laser designators (up to and including 1 milliwatt) are uncontrolled and continue to be available at all times without restriction. Because they hadn't found a good way to use lasers. Now things are completely different; Lasers play an important role in almost every aspect of science and technology. In science, especially in physics, lasers are used to trigger mechanisms or trigger switches. It can be used as a tool to measure time and distance, and it can also be used to invent the interest chart.
Lasers are used in industry for drilling, cutting and fusing equipment and electronic components. The military can also use lasers in guidance, defense and nuclear weapons systems. Lasers have also had a huge impact on humans in communication systems and medicine. Since the invention of laser until now, there have been various kinds of laser. Laser is divided into wavelength, can be divided into visible light, infrared, ultraviolet, X-ray and multi-wavelength adjustable. At present, the most widely used in industry is infrared laser and ultraviolet laser. Such as :CO2 laser 10.64um infrared laser, Krypton lamp pumped YAG laser 1.064um infrared laser, xenon lamp pumped YAG laser 1.064um infrared laser, semiconductor side pumped YAG laser 1.064um infrared laser.