Equipment
- The two types of lasers commonly used are solid-state lasers and gas lasers (especially ruby lasers and Nd:YAG lasers).
- The first type uses one of several solid media, including synthetic ruby and chromium in aluminum oxide, neodymium in glass (Nd:glass), and the most common type, crystal composed of yttrium aluminum garnet doped with neodymium (Nd:YAG).
- Gas lasers use mixtures of gases like helium, nitrogen, and carbon dioxide (CO2 laser) as a medium.
- Regardless of type, however, when the medium is excited, it emits photons and forms the laser beam.
Read more about this topic: Laser Beam Welding
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—Lyndon Baines Johnson (1908–1973)
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