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Ytterbium-doped fluophosphate laser glass and preparation method thereof

A technology of laser glass and phosphate, applied in the field of laser glass, can solve the problems of not being able to be used as a laser output medium, affecting the stability of glass components, and difficult to control the melting process of fluorine-phosphorus glass components.

Inactive Publication Date: 2011-02-16
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI +1
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Problems solved by technology

Materials with excellent spectral properties may not be able to prepare large-size and high-uniformity glass samples for tens of hours or even tens of hours, that is, they cannot be used as practical laser output media
[0004] There is very little research on laser fluorophosphorus glass in the world. The reason is that it is difficult to control the fluorophosphorus glass components suitable for long-time melting and its melting process, because the fluoride in the fluorophosphorus glass composition will be melted with the melting at high temperature. The prolongation of time and the increase of melting temperature produce a large amount of volatilization, which greatly affects the stability of glass components, and thus affects the glass-forming performance, crystallization stability, thermal shock resistance and mechanical properties of the final sample. A series of physical and chemical properties

Method used

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  • Ytterbium-doped fluophosphate laser glass and preparation method thereof
  • Ytterbium-doped fluophosphate laser glass and preparation method thereof
  • Ytterbium-doped fluophosphate laser glass and preparation method thereof

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Embodiment 1

[0024] In the first step, according to Table 1, select 1# glass formula and calculate, weigh 3.5Kg powder and mix well.

[0025] The specific calculation method of the ingredients is as follows: according to its cationic molar composition P 5+ : 21.0mol%, Al 3+ : 10.0mol%, Mg 2+ : 15.0mol%, Ca 2+ : 9.5mol%, Sr 2+ : 8.0mol%, Ba 2+ : 4.5mol%, Li + : 27.0mol%, Na + : 4.0mol%, Yb 3+ : 1.0mol%, if you choose to introduce 21mol% P 5+ The raw material is: 3Al(PO 3 ) 3 , where 9P 5+ , 3Al 3+ ;2LiPO 3 , where 2P 5+ , 2Li + ; 2Mg(H 2 PO 4 ) 2 , where 4P 5+ , 2Mg 2+ ; 2Sr(H 2 PO 4 ) 2 , where 4P 5+ , 2Sr 2+ ;2NaH 2 PO 4 .2H 2 O, where 2P 5+ , 2Na + , the introduction amount of each cation is: 21mol%P 5+ , 3mol%Al 3+ , 2mol% Li + , 2mol% Mg 2+ , 2mol% Sr 2+, 2mol% Na + , then need to introduce 7mol% AlF 3 , 13mol% MgF 2 , 9.5mol% CaF 2 , 6.0 mol% SrF 2 , 4.5 mol% BaF 2 , 25.0mol% LiF, 2.0mol% NaF, 1.0mol% YbF 3 , then all cations satisfy the compos...

Embodiment 2

[0030] In the first step, according to Table 1, select 3# glass formula and calculate, weigh 3.5Kg powder and mix well. The specific calculation method is as follows: according to its cation molar composition P 5+ : 27.6mol%, Al 3+ : 18.2mol%, Mg 2+ : 6.3mol%, Ca 2+ : 12.5mol%, Sr 2+ : 10.1mol%, Ba 2+ : 11.3mol%, Li + : 6mol%, Na + : 5.0mol%, Nb 5+ : 1.0mol% Yb 3+ : 2.0mol%, if you choose to introduce 27.6mol% P 5+ The raw material is: 5Al(PO 3 ) 3 , where 15P 5+ , 6Al 3+ ; 2Ba(PO 3 ) 2 , where 4P 5+ , 2Ba 2+ ; 2.8Sr(H 2 PO 4 ) 2 , where 5.6P 5+ , 2.8Sr 2+ ; 3NaH 2 PO 4 .2H 2 O, of which 3P 5+ , 3Na + , the introduction amount of each cation is: 27.6mol%P 5+ , 5mol%Al 3+ , 2 mol% Ba 2+ , 2.8 mol% Sr 2+ , 3 mol% Na + , then need to introduce 13.2mol% AlF 3 , 6.3 mol% MgF 2 , 12.5mol% CaF 2 , 7.3 mol% SrF 2 , 9.3 mol% BaF 2 , 6.0mol% LiF, 2.0mol% NaF, 1.0mol% Nb 2 o 5 , 2.0mol% YbF 3 , then all cations satisfy the composition requirements. ...

Embodiment 3

[0034] In the first step, according to Table 1, select 5# glass formula and calculate, weigh 3.5Kg powder and mix well. The specific calculation method is as follows: according to its cation molar composition P 5+ : 26mol%, Al 3+ : 28mol%, Mg 2+ : 5.7mol%, Ca 2+ : 12.8mol%, Sr 2+ : 11.8mol%, Ba 2+ : 10.7mol%, Li + : 6mol%, Na + : 2.0mol%, Yb 3+ : 3.0mol%, if you choose to introduce 26mol% P 5+ The raw material is 6Al(PO 3 ) 3 (18P 5+ , 6Al 3+ ); 2Ba(PO 3 ) 2 (4P 5+ , 2Ba 2+ ); 2Sr(H 2 PO 4 ) 2 (4P 5+ , 2Sr 2+ ); the introduction amount of each cation is respectively: 26mol%P 5+ , 6mol%Al 3+ , 2 mol% Ba 2+ , 2mol% Sr 2+ , then need to introduce 22mol% AlF 3 , 5.7 mol% MgF 2 , 12.8 mol% CaF 2 , 9.8 mol% SrF 2 , 8.7 mol% BaF 2 , 2.0mol% NaF, 3.0mol% YbF 3 , then all cations satisfy the composition requirements.

[0035] The second step is to melt the fluorophosphorus glass: raise the temperature of the 1 liter platinum crucible furnace to 950°C and ...

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Abstract

The invention relates to ytterbium-doped fluophosphate laser glass and a preparation method thereof. The glass comprises phosphate, fluoride and little oxide, wherein cation contains the following elements in mole percentage: 21.0-35.0 mol percent of P<5+>, 10.0-28.0 mol percent of Al<3+>, 6.0-15.0 mol percent of Mg<2+>, 9.5-13.0 mol percent of Ca<2+>, 8.0-13.0 mol percent of Se<2+>, 4.5-11.3 mol percent of Ba<2+>, 0-27.0 mol percent of Li<+>, 2.0-5.0 mol percent of Na<+>, 0-1.0 mol percent of Nb<5+> and 1.0-3.0 mol percent of Yb<3+>. The glass is prepared by adopting the traditional fusion method. The fluorescence lifetime of Yb<3+> is from 1.70ms to 2.3ms in a 2mm sample, and the Abbe number is between 73.4 and 81.8. Proved by experiments, the ytterbium-doped laser glass is a practical medium material for outputting ultrahigh power and ultrashort pulse laser.

Description

technical field [0001] The invention relates to laser glass, in particular to ytterbium-doped fluorophosphate laser glass and a preparation method thereof. Background technique [0002] Although high-power laser systems worldwide, such as NIF, ICF and fast ignition projects, still use Nd-doped phosphate glass as the high-power laser gain medium, Nd-doped phosphate glass has obviously not been able to meet the requirements of high-power laser systems for higher Laser peak power and peak energy requirements. All developed countries are developing new laser gain medium materials suitable for higher power laser output, and ytterbium-doped fluorophosphorus glass is also one of the candidate materials. This is because the material dispersion of fluorophosphorus glass is very small, the nonlinear effect is low, the self-focusing damage is weak under the action of strong laser, its negative refractive index temperature coefficient makes the optical path change small, its effective ...

Claims

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Application Information

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IPC IPC(8): C03C3/247
Inventor 张丽艳张军杰胡丽丽
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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