Thulium-doped heavy metal oxide glasses for 2UM lasers
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United States of America Patent
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Nov 20, 2007
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Nov 16, 2004
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Nov 16, 2004
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Abstract
A heavy metal oxide glass selected from germanate, tellurite and bismuth oxide glasses provides a host for highly efficient Thulium doped 2 .mu.m oxide glass and fiber lasers. The concentration of Thulium ions is high enough that energy transferred by the phenomenon of cross-relaxation will enhance laser emission at 2 .mu.m and suppress emission at 1.5 .mu.m so that 2 .mu.m emission is dominant.
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