5MW laser pointer can point to the stars
The 808nm infrared laser excitation wavelength of the green laser nonlinear crystal is used to generate 1064nm infrared, and then multiplied by the 532nm green light, which is a solid-state laser. Some green laser pointers operate in pulsed or near continuous mode to reduce cooling problems and extend battery life. It was recently announced that the frequency of the green laser needs to be doubled to increase efficiency. At night, even low-power green light can be seen by the Rayleigh scattering of atmospheric molecules. This is often used by astronomers to refer to stars and constellations. The green laser pointers used by astronomers and the general public in their usual practice output less than 5 milliwatts; in the United States, these are known as the 3a-class strongest lasers. Lasers that are reminiscent of reduced power in CD players and high powered laser pointer belong to Class 1 or 2, while gadgets that are reminiscent of higher power in medical or industrial equipment belong to Class 3b or 4. kind
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Laser is another major development in the 20th century after atomic energy, computers, semiconductors, and human beings. It is called "the fastest knife", "the most standard foot", "the brightest light" and "singular laser". The brightness is about 10 billion times that of the sun. Laser has a very obvious characteristic: directional light, high brightness, very pure color, high energy, etc. At present, it is widely used in various aspects of life such as industry and medical treatment. Laser pointer is a product that laser enthusiasts particularly love, especially for its high brightness and high energy characteristics. Consumers will use astronomical stars, funny cats, burning some combustibles and other entertainment purposes.
2021-11-30 11:53:10
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