Establish a laser pointer principle
The principle of laser must be based on the energy of particles in matter, some of which must have specific particles. There are two or more energy states. Sometimes they are very excited, sometimes they are very active. The nonlinear crystal excited by 808 nm laser produces 1064 nm infrared radiation. Frequency times 532 nm. Some green light lasers operate in pulsed or quasi continuous mode. Green laser can reduce frequency and improve efficiency. Nemec Zu auf molecules are dispersed in the rollivon atmosphere, and you can see low green lights at night. Astronomers often see this laser indicator. The Green laser pointer arrow may have a lot of output power. 5MW is the safest and can be seen in darker light, so no more power is needed to indicate the target.
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If the laser beam is much larger than forced absorption, you can start looking at another mountain and emitting spontaneous radiation. Laser stimulates crystal rod (solid-state laser) or high-density gas laser (high-density laser), and its energy source is light (laser or diode laser) or discharge (equivalent to fluorescent lamp). When a laser is emitted in a certain direction, it will send out a larger optical signal. The proportion of materials processed by the laser using a transparent mirror image. If the particles relax from the high-energy state to the low-energy state, and the working material is in the particle number inversion mode, place two mirrors in front and back. In addition, there is a complete mirror and another part of the mirror at the back. This structure is called a resonator. When the laser emits annoying radiation, photons will jump between the two mirrors, pass through the working material many times, continue to produce forced radiation, and continue to improve. The above is the working principle of the laser pen.
2021-08-27 10:15:35
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