2.7 .mu.M laser crystalline material utilizing multiple-channel optical pumping
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United States of America Patent
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Nov 9, 1999
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Dec 16, 1997
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Dec 16, 1997
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Abstract
A Cr/Tm/Er-doped, yttrium- or lutetium-garnet host material crystal for a solid-state laser, wherein about 3 to about 8 atomic percent of the yttrium or lutetium, respectively, crystallographic sites are occupied by Tm.sup.3+ ions, about 7 to about 22 atomic percent of the yttrium or lutetium, respectively, crystallographic sites are occupied by Er.sup.3+ ions, and about 0.6 to about 1.6 atomic percent of the octahedral sites of the garnet structure are occupied by Cr.sup.3+ ions, which crystal lases under the influence of a pumping means at a wavelength of no more than about 2.7.mu..
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