Doped neodymium lithium lanthanum barium tungstate laser crystal and its preparation method and usage

A laser crystal, neodymium lithium tungstate technology, applied in the direction of crystal growth, chemical instruments and methods, single crystal growth, etc., can solve the problems of narrow absorption spectrum line, unsuitable for LD pumping, etc., and achieve moderate crystal hardness and excellent optics Features, Ease of Processing

Inactive Publication Date: 2007-12-19
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Problems solved by technology

However, it has the disadvantage of narrow absorption spectrum and is not suitable for pumping

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0011] Example: Czochralski method growth doping concentration is 1.22at.% Nd 3+ Nd 3+ :BaLaLiWO 6 Laser crystal.

[0012] BaCO will be accurately weighed according to the proportioning 3 , Li 2 CO 3 , La 2 O 3 , WO 3 And Nd 2 O 3 Mix and grind evenly, after pressing the tablets, put in Ф80×80mm 3 In the corundum crucible, the solid-phase reaction was carried out at 1100°C in a muffle furnace for 24 hours, and then the temperature was raised to 1300°C for 48 hours, repeated twice. Load the synthesized samples above Ф40×35mm 3 In the iridium crucible, put it into the pulling furnace, using the pulling method, in the N 2 In the atmosphere, the growth temperature is 1410°C, the crystal rotation speed is 20 rpm, and the pulling speed is 2 mm / hour, the size of the growth is φ20×19mm 3 Nd 3+ :BaLaLiWO 6 Crystal. The plasma element analysis shows that Nd in the crystal 3+ The ion content is 1.22at.%.

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Abstract

In this invention, C20chralski method is used for the growth of neodymium doped lithium lanthanum barium tungstate laser crystal. The growth conditions are: growth temperature 1410 deg.C, crystal rotation rate 15-20 r.p.m, pulling speed 1.5-3 mm/h. This crystal is of cubic crystal, space group being of Fm3m, single cell parameter a=0.859 angstrom, Z=4, single cell volum V=523.41 cubic angstrom. This invented crystal is a novel kind of laser crystal, it can produce laser output at about 1.06 micron wave length, and being prospected to be real utilization.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic functional materials, in particular to a laser crystal 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. [0003] 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 us...

Claims

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Application Information

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IPC IPC(8): C30B29/32C30B15/00H01S3/16
Inventor 王国富赵丹林州斌张莉珍
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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