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Working substance
According to the different working material state can be divided into all lasers into the following categories: ① solid lasers (crystal and glass), the working material used in these lasers, is made by doping the metal ions that can produce the effect of stimulated radiation into the crystal or glass matrix to form the luminescent center; ② gas lasers, the working material they use is gas, and according to the gas in the real production of excited emission effect of the work of different particle nature, and further distinguished as atomic gas lasers, ion gas lasers, molecular gas lasers, excimer gas lasers, etc.; ③ liquid lasers, these lasers used in the work of the material mainly includes two types, one is organic fluorescent dye solution, the other is a solution containing rare earth metal ions of inorganic compounds, in which metal ions (such as Nd) play a The principle
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