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Yb, Gd co-doped barium fluoride crystal and preparation method thereof

A barium fluoride and crystal technology, applied in the field of optoelectronic functional materials, can solve problems such as efficiency and repetition frequency that cannot meet application requirements, and achieve the advantages of crystal growth, reduction of unit energy output cost, and reduction of pumping peak power and quantity. Effect

Inactive Publication Date: 2010-10-20
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The efficiency and repetition rate of single-run high-peak power and high-energy solid-state lasers developed from the lamp-pumped neodymium glass technology for ICF cannot meet future application requirements.

Method used

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  • Yb, Gd co-doped barium fluoride crystal and preparation method thereof
  • Yb, Gd co-doped barium fluoride crystal and preparation method thereof
  • Yb, Gd co-doped barium fluoride crystal and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Press YbF 3 , GdF 3 、BaF 2 The molar ratio is 0.01:0.1:1 for batching. After the raw materials are fully mixed, they are dehydrated in a drying oven at 150°C for 15 hours, and then uniformly pressed into blocks. A platinum crucible with a diameter of 30 mm and a length of 150 mm is used, and the deoxidizer is polytetrafluoroethylene. The temperature of the melting material was 960° C., and the temperature was kept constant for 6 hours. The crystal growth temperature gradient was set at 30°C / cm, the crucible was lowered at a speed of 1mm / hour, and cooled to room temperature at a cooling rate of 20°C / hour after the growth was completed.

Embodiment 2

[0021] In Example 1, by YbF 3 , GdF 3 、BaF 2 The molar ratio is 0.02:0.1:1 for batching, and the crystal is taken out and processed into 10×10×1mm 3 Spectrum test of the sample, absorption spectrum as attached figure 1 As shown, the fluorescence spectrum is attached as figure 2 shown.

Embodiment 3

[0023] Press YbF 3 , GdF 3 、BaF 2 The molar ratio is 0.02:0.2:1 for batching, after fully mixing, dehydration in a drying oven at 160°C for 10 hours, and then uniformly pressed into blocks. The crucible uses a 30*30*180 flat-bottomed crucible with BaF 2 The crystal is used as a seed crystal, the crucible is vacuum-sealed, and the deoxidizer is rubber. The crucible is lowered at a speed of 1.5mm / hour, and cooled to room temperature at a cooling rate of 30°C / hour after growth.

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Abstract

The invention discloses an Yb, Gd co-doped barium fluoride crystal and a preparation method thereof. The molecular formula of the crystal is YbxGdyBaF2+3x+3y, wherein x is the doping density of Yb3+ and is equal to 1-10mol percent; and y is the doping density of Gd3+, and is equal to 10-30mol percent. The crystal is grown by a melt method. The crystal has large absorption and emission section, long fluorescence lifetime and high heat conductivity, is a laser gain material for high-efficiency, high-frequency and high-power lasers, and can be used for laser diode pumped high-frequency, high-power tunable or ultrashort-pulse lasers.

Description

technical field [0001] The invention relates to an optoelectronic functional material, in particular to a ytterbium-gadolinium co-doped barium fluoride crystal and a preparation method thereof, and is applied in a high repetition frequency, high power, tunable or ultrashort pulse laser pumped by an all-solid-state LD. Background technique [0002] Laser technology is one of the four major inventions of the twentieth century, along with atomic energy, semiconductors and computers. All-solid-state lasers pumped by semiconductor lasers have been widely studied due to their small size, high output power, good stability, full solidification, high efficiency, long life and good beam quality. Among them, high-power and high-energy solid-state lasers are solid-state lasers. an important direction of development. It is widely used in communication, medical treatment, laser display, laser nuclear fusion, scientific research, military industry and other fields. [0003] The yb3+ ion ...

Claims

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Application Information

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IPC IPC(8): C30B29/12C30B11/00
Inventor 尹继刚杭寅张连翰何晓明赵呈春
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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