Types of Lasers
Solid-state lasers have lasing (like a
ruby) material
distributed in a solid matrix. When excited electrically they emit a
photons. Gas lasers (helium and helium-neon, HeNe, are the most common gas lasers) have a primary output of visible red light. CO2 lasers emit energy in the far-infrared, and are used for cutting hard materials. Excimer lasers use reactive gases, such as chlorine and fluorine, mixed with noble gas(es) such as argon, krypton or xenon. When electrically stimulated, a dimer is produced. When excited, the dimer will produce a laser Dye lasers use organic dyes in solution or suspension. They can be tuned to emit over a broad range of wavelengths. Semiconductor lasers, sometimes called diode lasers, are not solid-state lasers. These electronic devices are generally very small and use low power. (Howstuffworks)
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Lasers are Classified in to area's
depending on how much damage they can do a person. Every laser is to
be labeled in the United States. Here are the classifications:
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