| http://www.w3.org/ns/prov#value | - Further, a laser medium including, for example, a glass being doped by other rare-earth element, for example, lanthanoid element including Ce, Pr, Pm, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb or Lu, ions thereof, a transition metal element, or a transition metal ion, and has different characteristics may be used for the laser medium 12.
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