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Neodymium boracic acid oxygen calcium gadolinium lanthanum doped laser crystal and preparation method and usage thereof

A technology of neodymium oxycalcium borate, gadolinium lanthanum, and laser crystals, which can be used in crystal growth, chemical instruments and methods, and single crystal growth, and can solve problems such as narrow absorption lines and unsuitability for LD pumping

Inactive Publication Date: 2007-09-19
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
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  • 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 of pulling method growth is 3.0at.%Nd 3+ Nd 3+ :Gd 0.84 La 0.16 Ca 4 O(BO 3 ) 3 laser crystals.

[0013] Gd that will be accurately weighed according to the ratio 2 o 3 , La 2 o 3 , CaCO 3 、H 3 BO 3 and Nd 2 o 3 Mix and grind evenly, after tableting, put in φ60×40mm 3 In a platinum crucible, the solid phase reaction was carried out at 1000°C for 12 hours in a muffle furnace, and then the temperature was raised to 1200°C for 24 hours. Put the synthesized above samples into the pulling furnace, adopt the pulling method, under N 2 In the atmosphere, the growth temperature is about 1470°C, the crystal rotation speed is 5-20 rpm, and the pulling speed is 0.5-2 mm / hour, and the size is 30×25×18mm. 3 of high quality Nd 3+ 3.0 at.% Nd 3+ :Gd 0.84 La 0.16 Ca 4 O(BO 3 ) 3 crystals.

Embodiment 2

[0014] Example 2: The doping concentration is 3.0 at.% Nd grown by pulling method 3+ Nd 3+ :Gd 0.67 La 0.33 Ca 4 O(BO 3 ) 3 laser crystals.

[0015] Gd that will be accurately weighed according to the ratio 2 o 3 , La 2 o 3 , CaCO 3 、H 3 BO 3 and Nd 2 o 3 Mix and grind evenly, after tableting, put in φ60×40mm 3 In a platinum crucible, the solid phase reaction was carried out at 1000°C for 10 hours in a muffle furnace, and then the temperature was raised to 1200°C for 24 hours. Put the synthesized above samples into the pulling furnace, adopt the pulling method, under N 2 In the atmosphere, the growth temperature is about 1460°C, the crystal rotation speed is 5-20 rpm, and the pulling speed is 0.5-2 mm / hour, and the size is 32×23×23mm. 3 of high quality Nd 3+ 3.0 at.% Nd 3+ :Gd 0.67 La 0.33 Ca 4 O(BO 3 ) 3 crystals.

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PUM

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Abstract

A neodymium-intermingled calcium-gadolinium-lanthanum borate laser crystal and its preparing method and its use, relate to artificial lens field. Nd3+:GdXLa1-xCa4O(BO3)3 crystal having high quality and bigger size is produced by the pulling method (Czochralski method) at 1480 DEG C, at the crystal rotational speed of 5-20 turns / minute, under the drawing speed of 0.5-2 mm / hour. The crystal belongs to monoclinic system and Cm space group. The crystal is a novel laser crystal and can produce the laser output of 1060 nm wavelength. The crystal has also frequency-doubled effect, accordingly the blue-green laser output can be produced by itself-frequency-doubled and itself-frequency-mixed non-linear optical means. The solid laser produced by the crystal can be used in the a plurality of fieldes such as spectroscopy, biomedicine, military affairs, ect.

Description

technical field [0001] The invention relates to the field of artificial crystals and crystal growth in the technical field of optoelectronic functional materials. 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 are only a dozen kinds of laser crystals that can really be used in practice. [0003] At prese...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B15/00H01S3/16
Inventor 王国富韦波林州斌张莉珍胡祖树
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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