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Neodymium-doped potassium gadolinium phosphate laser crystal, and preparation method and application thereof

A technology of neodymium-doped potassium gadolinium phosphate and laser crystals, which is applied in the field of neodymium-doped potassium gadolinium phosphate laser crystals and its preparation. It can solve the problems of undiscovered crystal preparation and use, and achieve excellent thermal properties, difficult cleavage, and easy operation.

Inactive Publication Date: 2012-07-04
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, no reports about the compound doped with neodymium ions and its crystal preparation and use have been found.

Method used

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  • Neodymium-doped potassium gadolinium phosphate laser crystal, and preparation method and application thereof
  • Neodymium-doped potassium gadolinium phosphate laser crystal, and preparation method and application thereof
  • Neodymium-doped potassium gadolinium phosphate laser crystal, and preparation method and application thereof

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Experimental program
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Embodiment 1

[0020] A kind of preparation method of neodymium-doped gadolinium potassium phosphate laser crystal, with Gd 2 o 3 、Nd 2 o 3 、K 2 CO 3 and NH 4 h 2 PO 4 Mixture as raw material, with K 2 CO 3 and NH 4 h 2 PO 4 The potassium metaphosphate obtained by the reaction is a flux, and the doping concentration of neodymium is 5at.% Nd:KGdP prepared by the self-help flux method 4 o 12 ,Proceed as follows:

[0021] 1) Add 77.06g Gd 2 o 3 , 3.77g Nd 2 o 3 , 92.79g K 2 CO 3 and 308.90 g NH 4 h 2 PO 4 (The corresponding molar ratio of each atom of Gd, Nd, K and P is 0.95:0.05:3:6) Mix well and put into Φ60×60mm 2 In a platinum crucible, heat up to 900°C for a certain period of time to completely melt the raw materials, and then cool down to the saturation point.

[0022] The corresponding chemical reaction formula is as follows:

[0023] 0.95Gd 2 o 3 +0.05Nd 2 o 3 +3K 2 CO 3 +12NH 4 h 2 PO 4

[0024] →2KGdP 4 o 12 +4KPO 3 +18H 2 O↑+12NH 3 ...

Embodiment 2

[0032] A kind of preparation method of neodymium-doped gadolinium potassium phosphate laser crystal, with Gd 2 o 3 、Nd 2 o 3 、K 2 CO 3 and NH 4 h 2 PO 4 Mixture as raw material, with K 2 CO 3 and NH 4 h 2 PO 4 The potassium metaphosphate obtained by the reaction is a flux, and the doping concentration of neodymium is 15at.% Nd:KGdP prepared by the self-help flux method 4 o 12 ,Proceed as follows:

[0033] 1) Add 88.05g Gd 2 o 3 , 14.42g Nd 2 o 3 , 157.97g K 2 CO 3 and 230.10 g NH 4 h 2 PO 4 (the corresponding molar ratio of Gd, Nd, K and P atoms is 0.85:0.15:4:7), mix well and put into Φ60×60mm 2 In a platinum crucible, heat up to 900°C for a certain period of time to completely melt the raw materials, and then cool down to the saturation point;

[0034] 2) Place the seed crystal on the top of the melt, rotate the crucible at a speed of 20rpm, and start crystal growth by cooling at a rate of 0.3°C / day. The crystal growth temperature range is 810-795°C, ...

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Abstract

The invention relates to a neodymium-doped potassium gadolinium phosphate laser crystal of which the molecular formula is Nd:KGdP4O12, belonging to monoclinic systems. The neodymium-doped potassium gadolinium phosphate laser crystal has C2 / c space group structure, wherein neodymium ions are used as doping ion to substitute the lattice position of gadolinium ions, and the doping content of the neodymium is 1-20at / %.The preparation method is implemented in a way that: a mixture of Gd2O3, Nd2O3, K2CO3 and NH4H2PO4 is used as a raw material, potassium metaphosphate obtained by reacting K2CO3 and NH4H2PO4 is used as a fluxing agent, and a self-flux method is utilized to prepare the neodymium-doped potassium gadolinium phosphate laser crystal.The laser crystal preparation technique is simple and easy to operate; the prepared crystal can not be easily cloven, has the advantages of of moderate hardness, favorable mechanical properties, favorable thermal properties and favorable optical spectral characteristics, and is used as a working substance in a solid laser; a flash lamp or LD is used as a pumping source to activate the laser output of which the wavelength is 1.06 mu m; and thus, the invention can be widely used in the fields of spectroscopy, biomedicine and military affairs.

Description

technical field [0001] The invention relates to a laser crystal material, in particular to a neodymium-doped potassium gadolinium phosphate laser crystal and a preparation method and application thereof. Background technique [0002] Laser crystals are working substances in solid-state lasers. They refer to a type of luminescent material that uses crystals as a substrate to absorb the energy of pump light through discrete luminescent centers and convert it into laser output. The solid-state laser working substance is composed of matrix material and active ions. Its physical and chemical properties are mainly determined by the matrix material, while its spectral characteristics and fluorescence lifetime are determined by the energy level structure of laser ions. Since the artificial ruby ​​laser was successfully developed in the 1960s, hundreds of laser crystals have been discovered so far. However, due to various reasons, there are only a dozen kinds of laser crystals that ...

Claims

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Application Information

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IPC IPC(8): C30B29/14C30B9/12
Inventor 孙同庆孔勇发许京军
Owner NANKAI UNIV
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