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Method for Improving Fluorescence Emission of Rare Earth Ion Doped Germanate Glass in 2μm Band

A germanate glass and fluorescence emission technology, which is applied in the field of laser glass in the 2μm band, can solve the problems of reducing luminous efficiency, limiting fiber gain, clustering of rare earth ions, etc., and achieving good dispersion effect

Active Publication Date: 2020-05-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the glass is doped with a high concentration of rare earth ions, the rare earth ions will cluster, which reduces the luminous efficiency and limits the gain of the fiber

Method used

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  • Method for Improving Fluorescence Emission of Rare Earth Ion Doped Germanate Glass in 2μm Band
  • Method for Improving Fluorescence Emission of Rare Earth Ion Doped Germanate Glass in 2μm Band
  • Method for Improving Fluorescence Emission of Rare Earth Ion Doped Germanate Glass in 2μm Band

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Through the trivalent rare earth metal oxide Y 2 o 3 and Lu 2 o 3 Controlled multi-component germanate (BaO-Ga 2 o 3 -GeO 2 ) ratio of non-bridging oxygen and bridging oxygen in the laser glass, realize the controllable adjustment of the degree of freedom of the glass network structure, improve the doping concentration and dispersion of rare earth luminescent ions in the matrix glass, and realize enhanced 2μm band fluorescence emission . At the same time, it is ensured that the germanate laser glass has good devitrification resistance (ΔT=130° C.), mechanical processing performance and low phonon energy.

[0036] Specifically, the oxide composition of the multi-component germanate laser glass doped with rare earth ions is:

[0037]

[0038] Weigh each oxide (purity ≥ 99.99%) according to the proportion, mix well and form a mixture, put it into an alumina crucible, and put it in a high-temperature pit furnace at 1420°C for 4.5 hours to obtain molten Glass liqu...

Embodiment 2

[0041] Through the trivalent rare earth metal oxide Y 2 o 3 Controlled multi-component germanate (BaO-Ga 2 o 3 -GeO 2 ) ratio of non-bridging oxygen and bridging oxygen in the laser glass, realize the controllable adjustment of the degree of freedom of the glass network structure, improve the doping concentration and dispersion of rare earth luminescent ions in the glass, and realize enhanced 2μm band fluorescence emission. At the same time, it is ensured that the germanate laser glass has good devitrification resistance (ΔT=162° C.), mechanical processing performance and low phonon energy.

[0042] Specifically, the oxide composition of the multi-component germanate laser glass doped with rare earth ions is:

[0043]

[0044] Weigh each oxide (purity ≥ 99.99%) according to the proportion, mix well and form a mixture, put it into an alumina crucible, and put it in a high-temperature pit furnace at 1380°C for 4 hours to obtain molten glass liquid, stir evenly, during wh...

Embodiment 3

[0047] Through the trivalent rare earth metal oxide Lu 2 o 3 Controlled multi-component germanate (BaO-Ga 2 o 3 -GeO 2 ) ratio of non-bridging oxygen and bridging oxygen in the laser glass, realize the controllable adjustment of the degree of freedom of the network structure of the glass, improve the doping concentration and dispersion of rare earth luminescent ions in the matrix glass, and realize enhanced 2μm band fluorescence emission. At the same time, it is guaranteed that the germanate laser glass has good devitrification resistance (ΔT=165° C.), mechanical processing performance and low phonon energy.

[0048] Specifically, the oxide composition of the multi-component germanate laser glass doped with rare earth ions is:

[0049]

[0050] Weigh each oxide (purity ≥ 99.99%) according to the proportion, mix well and form a mixture, put it into an alumina crucible, and put it in a high-temperature pit furnace at 1450°C for 5 hours to obtain molten glass liquid, sti...

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Abstract

The invention provides a method for improving the 2microm waveband fluorescence emission of rare earth ion doped germanate glass. A trivalent rare earth metal oxide is utilized to control the ratio ofnon-bridging oxygen to bridging oxygen in the multi-component germanate laser glass to realize controllable adjustment of the degree of freedom of a glass network structure, thus improving the dopingconcentration and dispersibility of rare earth luminescent ions in matrix glass, reducing rare earth luminescent ion clusters, acquiring enhanced 2microm waveband fluorescence emission, ensuring thematrix glass good crystallization resistance and machining performance and low phonon energy, and providing a key matrix material for development of high-gain 2microm waveband active optical fiber.

Description

technical field [0001] The invention relates to the field of 2 μm band laser glass, in particular to a method for improving the 2 μm band fluorescence emission of rare earth ion-doped germanate glass. Background technique [0002] The 2μm band laser is located in the safe wavelength range of human eyes and is in the low loss window of atmospheric light transmission, including the water absorption peak near 1940nm. It has important application value in many fields such as lidar, laser detection, laser medical treatment and environmental monitoring. In addition, the 2μm band laser is also an ideal pump source for the mid-infrared laser (3-5μm). At present, 2μm band fiber laser has become one of the hot spots in the field of laser technology research [0003] The rare earth ions that produce luminescence in the 2μm band mainly include Tm 3+ and Ho 3+ . In 1988, D.C.Hanna of the University of Southampton in the United Kingdom prepared a Tm-doped 3+ Quartz glass single-mode ...

Claims

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Application Information

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IPC IPC(8): C03C3/253C03C4/12
CPCC03C3/253C03C4/12
Inventor 杨中民涂乐唐国武钱奇
Owner SOUTH CHINA UNIV OF TECH
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