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Laser crystal of lithium lanthanum molybdate with neodymium being doped, preparation method and usage

A technology of neodymium lanthanum lithium molybdate and laser crystals, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve problems such as narrow absorption spectrum lines and unsuitable LD pumping

Inactive Publication Date: 2007-02-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has the disadvantage of narrow absorption spectrum and is not suitable for pumping by LD, and LD pumping will be the development direction of laser pumping sources in the future.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: The doping concentration is 1.0 at.% Nd grown by pulling method 3+ Nd 3+ :LiLa(MoO 4 ) 2 laser crystals.

[0013] Li will be accurately weighed according to the ratio 2 CO 3 , La 2 o 3 、MoO 3 、Nd 2 o 3 Mix and grind evenly, after tableting, put in φ45×50mm 3 In a platinum crucible, the solid state reaction was carried out at 700°C for 24 hours in a muffle furnace; after taking it out, the pellet was reground and heated to 700°C for 48 hours. Put the synthesized above samples into a platinum crucible, and use the pulling method to grow a The size is 32×25×25mm 3 of high quality Nd 3+ 1.0 at.% Nd 3+ :LiLa(MoO 4 ) 2 crystals.

Embodiment 2

[0014] Example 2: The doping concentration is 3.0 at.% Nd grown by pulling method 3+ Nd 3+ :LiLa(MoO 4 ) 2 laser crystals.

[0015] Li will be accurately weighed according to the ratio 2 CO 3 , La 2 o 3 、MoO 3 、Nd 2 o 3 Mix and grind evenly, after tableting, put in φ45×50mm 3 In a platinum crucible, the solid phase reaction was carried out at 700°C for 24 hours in a muffle furnace; after taking it out, the pellet was reground and then heated to 800°C for 48 hours. Put the synthesized above samples into a platinum crucible, and use the pulling method to grow a The size is 30×18×18mm 3 of high quality Nd 3+ 3.0 at.% Nd 3+ :LiLa(MoO 4 ) 2 crystals.

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PUM

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Abstract

This invention discloses Czochralski method for preparing Nd-doped lanthanum lithium molybdate laser crystal (Nd3+ : LiLa(MoO4)2) and its application. The method comprises growing high-quality and large-size Nd3+: LiLa (MoO4)2 crystal at a temperature of 977 deg.C, a rotation speed of 20-55 rpm and a drawing speed of 0.5-1 mm / h. The crystal can produce laser output with wavelengths of 1.06 mum and 0.9 mum. Solid laser devices produced from the laser crystal can be used in such fields as spectroscopy, biomedicine and military.

Description

technical field [0001] The invention relates to the field of artificial crystals and crystal growth in the technical field of optoelectronic functional materials, in particular to a laser crystal material used as a working substance in a solid-state laser. Background technique [0002] Laser crystal is the working substance of solid-state laser. It refers to the luminescent material that uses crystal as the matrix to absorb pump light energy and convert it into laser output through discrete luminescent centers. The solid-state laser working substance is composed of matrix material and active ions. Its various 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 the active ion. Since the artificial ruby ​​pulse laser was successfully developed in 1960, hundreds of laser crystals have been discovered so far, but due to various reasons, there ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/32C30B15/00H01S3/16
Inventor 王国富黄新阳林州斌张莉珍
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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