Method for preparing oxygen fluorine chlorine tellurate glass with intermediate infrared fluorescence output at 4 mu m

A technology of oxyfluorochlorotellurite and its realization method, which is applied in the application field of mid-infrared rare earth doped luminescent glass, to achieve the effects of improving the forming ability, improving the fluorescence lifetime, and improving the pumping efficiency

Active Publication Date: 2013-08-14
CHINA ELECTRONICS TECH GRP NO 23 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] All the above reports are tellurite glasses that emit light in the 1.5-2 μm band, but there are no reports on tellurite glasses that emit light in the 3-5 μm band

Method used

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  • Method for preparing oxygen fluorine chlorine tellurate glass with intermediate infrared fluorescence output at 4 mu m
  • Method for preparing oxygen fluorine chlorine tellurate glass with intermediate infrared fluorescence output at 4 mu m
  • Method for preparing oxygen fluorine chlorine tellurate glass with intermediate infrared fluorescence output at 4 mu m

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] All components of the glass are: TeO 2 : 80mol%, WO 3 : 5mol%, ZnO: 5mol%, ZnCl 2 : 10mol%, Ho 2 O3: 0.02mol%, Yb 2 o 3 : 0.5mol%, of which rare earth Ho 2 o 3 , Yb 2 o 3 All are introduced in the form of external doping, accurately calculated, weighed and mixed according to the formula. Put the above mixture into a covered gold crucible, and put it in an electric furnace for melting, the atmosphere is air, the melting temperature is 760-900°C, and the melting time is 15-20min; Molded on a copper plate or a stainless steel mold, then annealed at 260 ° C for 2 hours to eliminate internal stress, and then cooled with the furnace. The thermal stability parameter ΔT (°C) of the sample prepared in Example 1 reaches 102°C, the glass has good glass-forming performance, and the fluorescence spectrum is shown in figure 1 .

Embodiment 2

[0035] All components of the glass are: TeO 2 : 75mol%, WO 3 : 5mol%, GeO 2 : 5mol%, ZnO: 5mol%, ZnF 2 : 10mol%, Ho 2 o 3 : 0.02mol%, HoF 3 : 0.02mol%, Yb 2 o 3 : 0.25mol%, YbF 3 : 0.25mol%, of which rare earth Ho 2 o 3 、HoF 3 , Yb 2 o 3 , YbF 3All are introduced in the form of external doping, accurately calculated, weighed and mixed according to the formula. Put the above mixture into a covered gold crucible, and put it in an electric furnace for melting, the atmosphere is air, the melting temperature is 760-900°C, and the melting time is 15-20min; Molded on a copper plate or a stainless steel mold, then annealed at 260 ° C for 2 hours to eliminate internal stress, and then cooled with the furnace. The thermal stability parameter ΔT (°C) of the sample prepared in Example 2 reaches 105°C, the glass has good glass-forming performance, and the fluorescence spectrum is shown in figure 1 .

Embodiment 3

[0037] All components of the glass are: TeO 2 : 70mol%, WO 3 : 10mol%, ZnO: 5mol%, ZnF 2 : 10mol%, ZnCl 2 : 5mol%, HoF 3 : 0.1mol%, YbF 3 : 1.5mol%, of which rare earth HoF 3 , YbF 3 All are introduced in the form of external doping, accurately calculated, weighed and mixed according to the formula. Put the above mixture into a covered gold crucible, and put it in an electric furnace for melting, the atmosphere is air, the melting temperature is 760-900°C, and the melting time is 15-20min; Molded on a copper plate or a stainless steel mold, then annealed at 260 ° C for 2 hours to eliminate internal stress, and then cooled with the furnace. The thermal stability parameter ΔT (°C) of the sample prepared in Example 3 reaches 110°C, the glass has good glass-forming performance, and the fluorescence spectrum is shown in figure 1 .

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Abstract

The invention relates to the technical field of intermediate infrared rare earth doped luminescent glass application, and aims at solving the technical problem of providing a method for preparing oxygen fluorine chlorine tellurate glass with intermediate infrared fluorescence output at 4 mu m. The glass is good in glass forming property, high in infrared light transmission rate, good in luminescence property and beneficial to output of fluorescence and laser of 4 mu m. The oxygen fluorine chlorine tellurate glass prepared by using a fusion method is tellurate glass which contains zinc fluoride and zinc chloride, and due to the appropriate amount of contains zinc fluoride and zinc chloride, the hydroxyl content and the phonon energy in the system are greatly reduced, so that the forming capability of the glass is effectively improved, the doping amount of rare earth ions is increased, and the fluorescence service lives of the rare earth ions are prolonged. By adopting the doping amount of the external doping rare earth ions, namely, Ho<3+> and Yb<3+>, the pumping efficiency of 980nm is greatly improved, and tests show that the oxygen fluorine chlorine tellurate glass has remarkable fluorescence output at 4 mu m.

Description

technical field [0001] The invention relates to the technical field of application of mid-infrared rare earth doped luminescent glass. technical background [0002] Due to its special output wavelength and good beam quality, 4μm mid-infrared fiber laser has broad application prospects in military, atmospheric communication, biomedical and other fields. Rare earth ion-doped crystal materials can realize the output of mid-infrared lasers, such as in all solid-state lasers working at room temperature, Pr 3+ :LaCl 3 Crystal (phonon energy about 210cm -1 ) can emit a pulsed laser with the longest wavelength of 7.24 μm, but this crystal is extremely deliquescent. 4μm lasers require glass host materials with low phonon energies. At present, the low phonon energy glass material systems used for rare earth ion doping mainly include fluoride and chalcogenide glasses. Among all fiber lasers, only fluoride fibers can achieve mid-infrared laser output with a wavelength greater than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/23C03C3/253C03C4/12
Inventor 戎亮林健任军江张文俊贾玉洁
Owner CHINA ELECTRONICS TECH GRP NO 23 RES INST
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