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Ytterbium doped fluorphosphate glass with long fluorescent life and preparation method of glass

A technology of ytterbium fluorophosphate and fluorescence lifetime, which is applied in the field of long fluorescence lifetime ytterbium-doped fluorophosphate glass and its preparation, can solve problems such as difficulty in obtaining hydroxyl groups, achieve low hydroxyl concentration, reduce volatilization, and high gain coefficient Effect

Inactive Publication Date: 2015-02-11
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional process method is difficult to obtain the hydroxyl absorption coefficient α OH less than 0.5cm -1 Therefore, it is more meaningful to use a new process to prepare high-gain glass with low hydroxyl concentration

Method used

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  • Ytterbium doped fluorphosphate glass with long fluorescent life and preparation method of glass
  • Ytterbium doped fluorphosphate glass with long fluorescent life and preparation method of glass
  • Ytterbium doped fluorphosphate glass with long fluorescent life and preparation method of glass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1~8 component design and performance parameter are as table 1 (unit is mol%, Yb 2 o 3 Doping amount is 3wt%):

[0023] components Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 P 2 o 5 17 17 17 17 17 17 17 17 AlF 3 28.5 28.5 28.5 28.5 28.5 28.5 28.5 28.5 LiF 14 NaF 14 14 14 14 14 14 KF 14 MgF 2 12.5 CaF 2 28 28 28 28 28 28 23 18 SrF 2 12.5 BaF 2 12.5 12.5 12.5 17.5 22.5 ZnF 2 12.5 Emission cross section pm 2 0.82 0.80 0.73 0.80 0.82 0.78 0.86 0.79 life ms 2.08 2.25 2.03 2.17 1.85 1.86 1.65 1.66 gain 1.70 1.8 1.48 1.74 1.52 1.45 1.42 1.31

[0024] Embodiment 1~8 adopts identical preparation method, and concrete steps are as follows:

[0025] F...

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Abstract

The invention discloses ytterbium doped fluorphosphate glass with a long fluorescent life and a preparation method of the glass. The glass comprises the following components by mole percentage: 10-20mol% of P2O5, 25-35mol% of AlF3, 20-35mol% of CaF2, 10-15mol% of RF and 7-25mol% of R'F2, wherein a sum of the percentage of the components is 100mol%; additional 3wt% of Yb2O3 is doped according to a weight ratio; R is Li<+>, Na<+> or K<+>; and R' is Mg<2+>, Sr<2+>, Ba<2+> or Zn<2+>. The preparation method of the glass comprises the following steps that raw materials are weighed according to the formula in a glove box, mixed uniformly, and added to a graphite crucible; carbon tetrachloride is added to the crucible, and heated to 900-1100 DEG C by a high frequency furnace and kept for 45min; finally, the high frequency furnace is turned off; the temperature falls to a room temperature rapidly; and the glass is taken out and placed in a muffle furnace for annealing. The glass has better gain performance; the fluorescent life reaches as high as 2.25ms; an emission cross section is 0.8pm<2>; a gain coefficient is 1.8ms*pm<2>; and a hydroxy absorption coefficient alphaOH is less than 0.3cm<-1>.

Description

technical field [0001] The invention relates to a laser glass material, in particular to a long fluorescence lifetime doped ytterbium fluorophosphate glass and a preparation method thereof. Background technique [0002] Due to its long fluorescence lifetime, high emission efficiency and strong emission intensity, ytterbium-doped laser glass is considered as a potential host material for fiber lasers. Among the laser glasses doped with ytterbium ions, fluorophosphate glass has low phonon energy, low nonlinear refractive index, wide transmission range from ultraviolet to near infrared, high solubility of ytterbium ions, and good thermal stability. And chemical stability and other properties, showing a good application potential. [0003] The intrinsic vibration peak of the free hydroxyl group is at 2500cm -1 and 3600cm -1 Nearby, this vibrational band is much larger than the maximum phonon energy of the glass matrix, so only two hydroxyl groups are needed to cause Yb 3+ Io...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C4/00C03C3/247
Inventor 彭波韦玮郑锐林王东东唐子汇全昭
Owner NANJING UNIV OF POSTS & TELECOMM
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