Semiconductor lasers with blue beams are typically based on gallium iii nitride gan.
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A blue laser is a laser that emits electromagnetic radiation with a wavelength between 360 and 480 nanometers which the human eye sees as blue or violet.
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Green laser pointer is now the world s most popular laser pointers because the green lasers than red lasers 6 times more than red laser beam significantly while the price is much cheaper than the blue and yellow.
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Blue beams are produced by helium cadmium gas lasers at 441 6 nm and argon ion lasers at 458 and 488 nm.
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Violet color or indium gallium nitride often.
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