Nd-doped lanthanum calcium oxygen borate laser crystal, method for making same and use thereof

A technology of lanthanum oxycalcium neodymium borate and laser crystal, which is applied in the field of self-frequency doubling laser crystal materials, and can solve the problem that the conversion efficiency only reaches 10

Inactive Publication Date: 2008-04-30
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the 1960s, Johnson et al. mixed Tm 3+ LiNbO 3 The self-frequency doubling laser output from 1853nm to 927nm is realized on the same crystal, but the conversion efficiency only reaches 10 -6 Order of magnitude [L.F.Johnson and A.A.Ballman, J.Appl.Phys., 40(1969)297]
So far, Nd:LaCOB crystals have been grown by the pulling method, and Nd:LaCOB has been used as the working material to obtain laser output by self-frequency doubling and self-mixing technology, which has not been reported yet.

Method used

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  • Nd-doped lanthanum calcium oxygen borate laser crystal, method for making same and use thereof
  • Nd-doped lanthanum calcium oxygen borate laser crystal, method for making same and use thereof

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Embodiment Construction

[0015] Weigh 10at% Nd according to stoichiometric ratio 3+ Nd 3+ :LaCa 4 O(BO 3 )3 , grinding, mixing, tableting, placed in a muffle furnace at a constant temperature of 1000°C for 12 hours, taken out and mashed, mixed, pressed into tablets, and then placed in a muffle furnace at a constant temperature of 1200°C for 24 hours. Synthesized Nd 3+ :LaCa 4 O(BO 3 ) 3 In an iridium crucible, in an inert gas (such as N 2 , Ar, etc.) under a protective atmosphere using the pulling method for growth, using (001) oriented seed crystals, the pulling speed is 0.5mm / h, and the rotation speed is 25rpm. The annealing time is about 60 hours. The grown crystal size is about φ30×40mm.

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Abstract

The invention is an lanthanum oxygen-calcium neodymium borate-doping laser crystal and its making method as well as its application, relating to the artificial crystal field. It belongs to a monoclinic system, space group is Cm, cell parameters are an equal to 8.1732 angstrom, b equal to 16.0860 angstrom, c equal to 3.6268 angstrom, beta equal to 101.40 deg., Z equal to 2, V equal to 467.4229 cu angstrom, and refractive index equal to 1.72. It adopts pull method (Czochralski method) to grow a high-quality, large-size lanthanum oxygen- calcium neodymium borate (Nd3plus : LaCa4O(BO3)3)-doping crystal at a crystal speed of 5-30 r / m and at a pull rate of 0.5-2mm / hr under 1410 deg.C. It is a new type laser crystal and has a nonlinear optical performance at the same time.

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 self-frequency doubling 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/16C30B15/04
Inventor 王国富卢意林洲斌胡祖树张莉珍
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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