Green laser pointer cool video fans love
The recommended output for green laser pointer is usually measured in milliwatts. In the United States, lasers are classified by the American National Standards Institute and the Food and Drug Administration (FDA). Class II (Class 2 or Class II) laser designator crows with visible light power less than 1 mW (wavelength 400-700 nm). Class3A (Class3A or IIIa) power is 1-5mw. Laser Laser Class 3B (Class 3B/IIIb) (output 5 to 500 mW) and Class 4 (Class 4 / IV) (output 500 mW or higher). Gas laser A laser whose excitation medium is gas. The helium-neon mixture used in the first continuous laser (Ali Javan, 1961) still has important uses. The output power is low (a few milliwatts), but there is also frequency dispersion. This very pure light is useful in devices used for interferometry, holography, or alignment (for example, public works). Carbon dioxide lasers can achieve high output of several kilowatts and are used in machining and surgery.
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Using the 808nm infrared laser excitation wavelength of green laser nonlinear crystal, 1064nm infrared light is generated, and then multiplied by 532nm belongs to the green light of solid state laser. Some green laser Pointers run in pulse or near-continuous mode to reduce cooling problems and extend battery life. The recently announced need to double the frequency of green lasers has boosted efficiency. At night, even low-power green light can be seen through Rayleigh scattering of atmospheric molecules. This is often used by astronomers to refer to stars and constellations. Green laser Pointers can have different power outputs. 5mW (Class 3A) is the safest method of use and can be seen in dim light, so no extra power is required for pointing.
2021-12-07 11:48:53
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