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Neodymium doped strontium barium niobate laser crystal, producing method, and purpose

A technology of neodymium barium strontium niobate and laser crystals, applied in the field of laser crystal materials, can solve the problems of unsuitable LD pumping and narrow absorption spectrum, and achieve the effects of excellent optical properties, hard crystal texture and fast growth speed

Inactive Publication Date: 2008-07-02
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 0.6 at.% Nd grown by pulling method 3+ Nd 3+ :( 0.5 Sr 0.5 ) 5 Nb 4 o 15 laser crystals.

[0013] Accurately weighed BaCO according to the ratio 3 , SrCO 3 , Nb 2 o 5 、Nd 2 o 3 Mix and grind evenly, after tableting, put in φ40×40mm 3 In the iridium crucible, the solid phase reaction was carried out at 800°C for 24 hours in a muffle furnace, and then the temperature was raised to 1200°C for 30 hours. Put the synthesized above samples into the pulling furnace, adopt the pulling method, under N 2 In the atmosphere, when the growth temperature is 1700°C, the crystal rotation speed is 10 rpm, and the pulling speed is 1.1 mm / hour, a crystal with a size of 20×28×20mm is grown. 3 of high quality Nd 3+ 0.6at.% Nd 3+ :( 0.5 Sr 0.5 ) 5 Nb 4 o 15 crystals.

Embodiment 2

[0014] Example 2: The doping concentration is 2.6 at.% Nd grown by pulling method 3+ Nd 3+ :( 0.5 Sr 0.5 ) 5 Nb 4 o 15 laser crystals.

[0015] Accurately weighed BaCO according to the ratio 3 , SrCO 3 , Nb 2 o 5 、Nd 2 o 3 Mix and grind evenly, after tableting, put in φ40×40mm 3 In the iridium crucible, the solid state reaction was carried out at 800°C for 24 hours in a muffle furnace, and then the temperature was raised to 1200°C for 40 hours. Put the above synthesized samples into the pulling furnace, adopt the pulling method, in the Ar atmosphere, the growth temperature is 1700 ℃, the crystal rotation speed is 5 rpm, and the pulling speed is 0.8 mm / hour. The size is 27×25×20mm 3 of high quality Nd 3+ 2.6at.% Nd 3+ :( 0.5 Sr 0.5 ) 5 Nb 4 o 15 crystals.

Embodiment 3

[0016] Example 3: The doping concentration is 3.5 at.% Nd grown by pulling method 3+ Nd 3+ :( 0.5 Sr 0.5 ) 5 Nb 4 o 15 laser crystals.

[0017] Accurately weighed BaCO according to the ratio 3 , SrCO 3 , Nb 2 o 5 、Nd 2 o 3 Mix and grind evenly, after tableting, put in φ40×40mm 3 In the iridium crucible, the solid state reaction was carried out at 800°C for 24 hours in a muffle furnace, and then the temperature was raised to 1200°C for 50 hours. Put the synthesized above samples into the pulling furnace, and use the pulling method to grow the The size is 22×25×20mm 3high quality Nd 3+ 3.5 at.% Nd 3+ :( 0.5 Sr 0.5 ) 5 Nb 4 o 15 crystals.

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PUM

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Abstract

The invention discloses a method for preparing and using laser crystal mixed with the barium strontium niobium oxide, which relate to the field of the intraocular lens. At a temperature of about 1700 DEG C, the invention, at a crystal rotation speed of 5 to 20 rotations per minute and a pulling rate of 0.5 to 2mm per hour, grows the crystal of Nd<3+>:(Ba0.5Sr0.5)5Nb4O15 of high quality and larger dimension through a czochralski method. The crystal belongs to the P3m1 space group, and has a refractive index of 2.0. The crystal is a novel laser crystal, which can generate a laser output with a wavelength of about 1.06 or 0.9 Mum. A solid laser made from the crystal can be applied in the fields such as spectroscopy, biomedicine, military science and etc.

Description

technical field [0001] The invention relates to the field of artificial crystals, in particular to a laser crystal material used as a working substance in a solid-state laser. Background technique [0002] 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 present, the most widely used laser crystal is yttrium aluminum garnet (YAG) crystal doped with neodymium ions, which has good physical and chemical properties, and is easy to grow high-quality crystals with high optical qu...

Claims

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Application Information

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IPC IPC(8): H01S3/16H01S3/06G02B1/02C30B29/00C30B29/10C30B15/00
Inventor 王国富王国建龙西法林州斌张丽珍
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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