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Self-activation crystal neodymium phosphate and preparation method thereof

A neodymium phosphate, self-activated technology, applied in the field of optoelectronic materials, can solve problems affecting applications and achieve high conversion efficiency

Active Publication Date: 2012-01-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, although there are many self-activated crystals, the inherent defects of the crystal itself have affected their applications.

Method used

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  • Self-activation crystal neodymium phosphate and preparation method thereof
  • Self-activation crystal neodymium phosphate and preparation method thereof
  • Self-activation crystal neodymium phosphate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Lithium carbonate-molybdenum oxide (Li 2 CO 3 -MoO 3 ) as a flux, raw material 4N Nd 2 o 3 , 4N NH 4 h 2 PO 4 , the above-mentioned components are strictly weighed, mixed evenly according to the mass ratio of ammonium dihydrogen phosphate: neodymium oxide: lithium carbonate: molybdenum oxide = 1: 1.46: 1.78: 6.92, put them into a platinum crucible, and heat up to 1000 ° C.

[0025] The chemical reaction equation is: Nd 2 o 3 +2NH 4 h 2 PO 4 = 2NdPO 4 +2NH 3 ↑+3H 2 O↑

[0026] The flux system reaction equation is: Li 2 CO 3 +2MoO 3 = Li 2 Mo 2 o 7 +CO 2 ↑

[0027] Raise the temperature to 1050°C and keep the temperature constant for 28 hours to ensure that the material is fully melted and then stirred to make the melt fully mixed and even. The temperature of the saturation point of the solution was measured by the seed crystal test method, and a non-defective neodymium phosphate seed crystal was selected. When the temperature was 10°C higher than t...

Embodiment 2

[0029] Lithium carbonate-molybdenum oxide (Li 2 CO 3 -MoO 3 ) as a flux, the raw material is 2N-5N Nd 2 o 3 , NH 4 h 2 PO 4 , strictly weigh the above components, according to the mass ratio of ammonium dihydrogen phosphate: neodymium oxide: lithium carbonate: molybdenum oxide = 1: 1.46: 1.78: 10.37, mix them evenly and put them into a platinum crucible, and heat up to 1000 ° C.

[0030] The chemical reaction equation is: Nd 2 o 3 +2NH 4 h 2 PO 4 = 2NdPO 4 +2NH 3 ↑+3H 2 O↑

[0031] The flux system reaction equation is: Li 2 CO 3 +3MoO 3 → Li 2 Mo 3 o 10 +CO 2

[0032]Raise the temperature to 1030°C, keep the temperature constant for 30 hours, stir after the material is fully melted, so that the melt is fully mixed and even. Use the seed crystal test method to measure the temperature of the solution saturation point, select a better quality seed crystal for growth, and when the temperature is 12°C higher than the solution saturation point, introduce the s...

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Abstract

The invention relates to a self-activation crystal neodymium phosphate and a preparation method thereof. Neodymium oxide and NH4H2PO4 are used as the raw materials; the lithium carbonate-molybdenum oxide is used as a fluxing agent; and the solute density is 20%. The neodymium phosphate crystal prepared by using a fluxing agent growing method is a monoclinic system, wherein the space group is P21 / n. A cell parameter is the neodymium phosphate crystal prepared by the invention which is used as a laser working matter in order to output 1060 nm and 1339 nm lasers. The crystal has a high active ions density so the crystal can be used for manufacturing a microchip laser device applied in the fields of medical treatment, scientific research, military, and the like.

Description

(1) Technical field [0001] The invention relates to neodymium phosphate (NdPO) in the technical field of optoelectronic materials 4 ) crystals and their growth methods. (2) Background technology [0002] Diode-pumped solid-state lasers (DPSSL) pumped by semiconductor lasers are widely used in industrial production, scientific research, medical treatment, military (defense), etc., and have become the mainstream of solid-state laser research and development in recent years. In DPSSL technology, the quality of the laser crystal has a decisive impact on the overall performance of the laser. Exploring laser crystals with better performance is a very basic and necessary work for the continued development of DPSSL technology. It is of great significance for improving laser performance and is one of the important research contents in the field of solid-state lasers. [0003] At present, all-solid-state lasers are developing in the direction of miniaturization, aiming to use microc...

Claims

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Application Information

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IPC IPC(8): C30B29/14C30B15/00
Inventor 王继扬李静王永政张怀金蒋民华
Owner SHANDONG UNIV
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