Upconversion luminescent material
A fluorescent material and optical technology, applied in the field of fluorescent materials, can solve the problems of limited infrared light absorption and low efficiency, and achieve the effects of wide application prospects, improved luminous efficiency, and enhanced conversion efficiency
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Embodiment 1
[0020] Transparent borosilicate glass-ceramic contains rare earth ions Eu 3+ and second-order nonlinear optical crystallite β-BaB 2 o 4 (average size: 10nm), Eu 3+ The molar concentration of ions in borosilicate glass is 0.001%, β-BaB 2 o 4 The volume percentage in borosilicate glass is 25%. Irradiated with a focused 800nm femtosecond laser, this example contains β-BaB 2 o 4 Nanocrystalline Eu 3+ The upconversion luminescence intensity at 615nm of doped transparent borosilicate glass-ceramics is higher than that without β-BaB 2 o 4 Crystalline glass is 12.2 times larger.
Embodiment 2
[0022] Rare earth ions Sm contained in transparent silicate glass-ceramics 3+ and the second-order nonlinear optical crystallite Ba 2 TiSi 2 o 8 (average size: 100nm), Sm 3+ The molar concentration of ions in silicate glass is 0.5%, Ba 2 TiSi 2 o 8 The volume percentage in silicate glass is 50%. Irradiated with a focused 800nm femtosecond laser, this example contains Ba 2 TiSi 2 o 8 Nanocrystalline Sm 3+ The up-conversion luminous intensity of doped transparent silicate glass-ceramic at 602nm is higher than that without Ba 2 TiSi 2 o 8 Crystalline glass is 18.8 times larger.
Embodiment 3
[0024] Rare earth ion Ce contained in transparent borate glass-ceramics 3+ and second-order nonlinear optical microcrystalline LiB 3 o 5 (average size: 20nm), Ce 3+ ions at a molar concentration of 0.1% in borate glass, LiB 3 o 5 The volume percentage in borate glass is 0.1%. Irradiated with a focused 800nm femtosecond laser, this example contains LiB 3 o 5 Nanocrystalline Ce 3+ The upconversion luminescence intensity at 420nm of doped transparent borate glass-ceramics is higher than that without LiB 3 o 5Crystalline glass is 1.6 times larger.
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