What are the laser pointer alternatives?
A low-power green laser pointer includes a pump source with a battery, a circuit board, a switch, and a semiconductor laser diode installed in the laser pointer housing, and is arranged in turn as the laser working medium in front of the optical path of the pump source outputting light The crystal and optical shaping system of the laser working medium is characterized in that the crystal of the green laser pointer working medium is a self-frequency-doubling crystal, and the self-frequency-doubling crystal is processed into a sheet along the frequency-doubling phase matching direction, and the light-transmitting direction of the sheet The thickness of the self-frequency doubling crystal is 0.1 mm-15mm; the two light-transmitting end faces of the self-frequency doubling crystal are coated with a dielectric film to facilitate pump light absorption, 1.05 μπι-1.1 μπι fundamental frequency light oscillation and 0.525 μπι-0.55 μιιι frequency doubling output film; the semiconductor laser diode pump light is injected into the self-frequency doubling crystal, and after the pump light power reaches the threshold, the self-frequency doubling crystal directly outputs green laser light.
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Evolution ensures that our eyes are fully adapted to sunlight. This contains more green areas, so our visual organs are more sensitive to green, which is why the green grass standing on the viewing platform is easier to attract the eye than the brown-blue water in the same environment. The light of the green laser pointer is easier to recognize than the blue one. Therefore, the blue high powered laser pointer must be much brighter than similar laser pointers, which is why in the case of poor quality, the upper limit of performance may become a problem. On the other hand, a good model can guarantee a clear presentation even in direct sunlight. On the other hand, depending on the situation, blue is much less than the bright green or red of most laser pointers.
2021-12-30 13:26:42
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