Novel 1.54 mu m waveband laser transparent ceramic

Abstract

The invention discloses a novel transparent ceramic with the wave band of laser of 1.54 Mum, and the transparent ceramic relates to the transparent laser ceramic material field. The chemical formula of the transparent laser ceramic material is Yb:Er:Ce:Gd3Ga5O12. The ultrafine dust of Ga2O3 and Gd2O3, Er2O3, Yb2O3 and CeO2 are taken as raw materials; Yb<3+>:Er<3+>:Ce<3+>:Gd3Ga5O12 nano-powder is prepared by adopting the synthetic technology of sol-gel / reducing atmosphere sintering; and through ball milling, mixing, sintering and drying, and the heat preservation is carried to the powder for a while under the conditions of certain temperature and vacuum, thereby sintering into the dense Yb<3+>:Er<3+>:Ce<3+>:Gd3Ga5O12 transparent laser ceramic. The material is used for realizing the output of laser with the wave band of 1.54 Mum.

Description

technical field [0001] The invention relates to the field of laser transparent ceramic materials. Background technique [0002] The 1.5μm band laser is a light source that is safe for human eyes, and has a wide range of applications in optical communication, medical treatment, laser detection and ranging and other fields. [0003] Doped with Er 3+ Ionic 4 I 13 / 2 → 4 I 15 / 2 The transition can produce lasing in the ~1.54μm band, but its laser efficiency is very low, which is mainly due to the Er 3+ The efficiency of the ion absorption pump source is very low. For this reason, Yb can be co-doped 3+ ions to sensitize Er 3+ The ions are pumped by the LD laser pump source in the 980nm band to realize the Yb 3+ 2 f 5 / 2 →Er 3+ 4 I 11 / 2 energy transfer, thereby increasing the pumping efficiency. Because Er 3+ pump level 4 I 11 / 2 to laser upper level 4 I 13 / 2 The fluorescence branching ratio is only 10-20%, so in general, materials with high phonon energy are used a...

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Problems solved by technology

[0007] 2. Low thermo-optic effect:

Since GGG belongs to the isotropic cubic crystal system and the same composition melting system, it can prepare large-scale high-quality transparent ceramic materials, so Yb:Er:Ce:Gd 3 Ga 5 o 12 Transparent ceramics will also be a new type of high-quality laser material in the 1.54μm band, for the use of Gd 3 Ga 5 o 12 Transparent ceramics are laser transparent ceramics as the matrix material. At present, the research mainly focuses on Nd-doped GGG transparent laser ceramic materials, and the research has obtained good results. However, for Yb 3+ :Er 3 + : Ce 3+ Doped Gd 3 Ga 5 o 12 There are no research reports on laser transparent ceramics at home and abroad

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