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Ytterbium, sodium, calcium, lithium and niobium doped garnet crystal as well as preparation method and application thereof

A technology of doping ytterbium sodium calcium lithium and garnet, applied in the field of laser crystal materials, can solve the problems of limited crystal application, narrow emission spectral bandwidth, etc.

Active Publication Date: 2018-03-06
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the ion-doped glass matrix, although the rare earth-doped traditional crystal matrix has the advantages of high thermal conductivity and high laser threshold, the narrow emission spectrum bandwidth limits the application of crystals in ultrashort pulses.

Method used

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  • Ytterbium, sodium, calcium, lithium and niobium doped garnet crystal as well as preparation method and application thereof
  • Ytterbium, sodium, calcium, lithium and niobium doped garnet crystal as well as preparation method and application thereof
  • Ytterbium, sodium, calcium, lithium and niobium doped garnet crystal as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] According to the following chemical formula:

[0027] X=0.15, y=0.275 according to the following chemical formula:

[0028] Weigh the compound CaCO 3 、Na 2 CO 3 , Nb 2 o 5 、Gd 2 o 3 , Yb 2 o 3 , Li 2 CO 3 After mixing, carry out solid phase reaction in muffle furnace at 1050°C for 24 hours; take it out and regrind into powder, mix and tablet, then carry out solid state reaction in muffle furnace at 1150°C for 30 hours and take it out Prepare polycrystalline material for later use.

[0029] The polycrystalline material is prepared by single crystal furnace pulling method. Put the polycrystalline material into the iridium gold crucible, in order to prevent the iridium gold crucible from being oxidized, first vacuumize and then rush into nitrogen as a protective gas. Set the intermediate frequency power of the heating program of the single crystal furnace to 4000w to completely melt the polycrystalline material. Afterwards, the seed crystal is used for pu...

Embodiment 2

[0032] It is basically the same as Example 1, except that x=0.24 and y=0.275. According to the chemical reaction formula:

[0033]

[0034] Weigh the compound CaCO 3 、Na 2 CO 3 , Nb 2 o 5 、Gd 2 o 3 , Yb 2 o 3 , Li 2 CO 3 After mixing, carry out solid phase reaction in muffle furnace at 1050°C for 24 hours; take it out and regrind into powder, mix and tablet, then carry out solid state reaction in muffle furnace at 1150°C for 30 hours and take it out Prepare polycrystalline material for later use.

[0035]The polycrystalline material is prepared by single crystal furnace pulling method. Put the polycrystalline material into the iridium gold crucible, in order to prevent the iridium gold crucible from being oxidized, first vacuumize and then rush into nitrogen as a protective gas. Set the intermediate frequency power of the heating program of the single crystal furnace to 4000w to completely melt the polycrystalline material. Afterwards, the seed crystal is used...

Embodiment 3

[0038] It is basically the same as Embodiment 1, except that x=0.3 and y=0.275. According to the chemical reaction formula:

[0039]

[0040] Weigh the compound CaCO 3 、Na 2 CO 3 , Nb 2 o 5 、Gd 2 o 3 , Yb 2 o 3 , Li 2 CO 3 After mixing, carry out solid phase reaction in muffle furnace at 1050°C for 24 hours; take it out and regrind into powder, mix and tablet, then carry out solid state reaction in muffle furnace at 1150°C for 30 hours and take it out Prepare polycrystalline material for later use.

[0041] The polycrystalline material is prepared by single crystal furnace pulling method. Put the polycrystalline material into the iridium gold crucible, in order to prevent the iridium gold crucible from being oxidized, first vacuumize and then rush into nitrogen as a protective gas. Set the intermediate frequency power of the heating program of the single crystal furnace to 4000w to completely melt the polycrystalline material. Afterwards, the seed crystal is u...

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Abstract

The invention discloses an ytterbium, sodium, calcium, lithium and niobium doped garnet crystal. The crystal has a molecular formula of Ca3-2xNaxYbxLiyNb1.5+yGa3.5-2yO12, wherein x is equal to 0.15-0.3, y is equal to 0.27-0.28, and the doping concentration of the ion Yb<3+> is 5-10at. %. The ytterbium, sodium, calcium, lithium and niobium doped garnet crystal belongs to a cubic system. The meaningof the at. % is an atomic number percentage. The invention further discloses a preparation method of the ytterbium, sodium, calcium, lithium and niobium doped garnet crystal and application thereof.According to the Na<+> doped in the ytterbium, sodium, calcium, lithium and niobium doped garnet crystal disclosed by the invention, the disorder degree of the crystal is high, less defects exist in the crystal, and production of high-energy ultra-short laser pulse is facilitated.

Description

technical field [0001] The invention belongs to the field of laser crystal materials, and in particular relates to a ytterbium-doped sodium calcium lithium niobium garnet crystal, a preparation method thereof, and an application in lasers. Background technique [0002] In the all-solid-state laser, limited by some conditions such as the pump source and the experimental device, the output of the continuous wave can no longer meet people's needs for the laser. Therefore, people have developed pulsed laser technology. The technology to realize pulsed laser mainly includes Q-switching and mode-locking. Q-switching can realize 10 -7 -10 -9 Pulses on the order of seconds, while the mode-locking technology can achieve ultra-fast pulse output on the order of femtoseconds. [0003] Ultrafast pulse (pulse width 10 -12 -10 -15 s) It has the characteristics of extremely short duration, extremely high peak power, and extremely wide spectrum, and has been widely used in many fields su...

Claims

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Application Information

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IPC IPC(8): C30B29/28C30B28/02C30B15/00H01S3/16
CPCC30B15/00C30B28/02C30B29/28H01S3/164
Inventor 潘忠奔苑华磊戴晓军张衍居佳袁浩蔡华强
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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