Features of high power green laser pointer
The green laser pointer can be used for similar purposes as well as outdoors in sunlight or longer distances. Hazards Improper use of lasers, direct viewing of lasers can cause temporary or even permanent visual damage. Common laser pointers include red light (650-660nm, 635-640nm), green light (520-525nm, 532nm), blue light (445-450nm, 465nm), blue-violet light (405nm), etc. The power is usually in milliwatts. unit. It is usually used by reporters, teaching, or tour guides to project a light spot or beam pointing to an object. Principle The early laser pointer (helium-neon) helium-neon gas laser produces a laser with a wavelength of 633nm, which is usually used to generate a laser beam with an energy of no more than 1 milliwatt. The apparent brightness of the light spot irradiated by the Laser pointer depends not only on the power and surface reflectivity of the laser, but also on the color vision of the human eye.
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The green laser pointer can have a variety of output powers. 5mW is the safest to use and can be seen under darker lighting, so no stronger power is needed for pointing purposes. The 808nm infrared laser is used to excite the nonlinear crystal to generate 1064nm infrared light, and then to generate 532nm green light after frequency doubling, which is a solid-state laser. Some green lasers work in pulsed or quasi-continuous mode to reduce cooling problems and extend battery life.
2021-09-15 12:38:25
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