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Intermediate, infrared laser crystal material of dysprosium activated

A technology of infrared lasers and crystal materials, applied in the growth of polycrystalline materials, active dielectric materials, crystal growth, etc., can solve the problems of high passive loss of lasers and low frequency of mid-infrared lasers

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

[0003] The main problem of laser crystals directly producing high-efficiency mid-infrared laser output is: because the mid-infrared laser frequency is very low, it is equivalent to the lattice vibration frequency of many famous laser crystals, that is, the phonon vibration frequency, which leads to rapid non-radiative relaxation and laser emission. The strong competition of , thus, leads to high passive loss of the laser
At present, foreign countries have grown Er 3+ :KPb 2 Cl 5 Laser crystals achieve mJ-level laser output, while other active ion-doped KPb 2 Cl 5 Laser crystals have not been reported to have mid-infrared laser output, and domestic related research is completely blank

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  • Intermediate, infrared laser crystal material of dysprosium activated

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Embodiment 1

[0016] Embodiment one: KPb 2 Cl 5 : Dy 3+ Crystal Growth Preparation

[0017] First, the raw materials KCl and PbCl 2 Processing: separate the appropriate amount of analytically pure KCl and PbCl 2 The raw materials are put into a self-made sintering furnace, and high-purity argon gas is introduced to make it flow slowly, heated to 300°C, and then the temperature is lowered, and the raw materials are stored for later use. Rare earth halides are then obtained through a liquid-phase reaction: the specific method is to mix a certain amount of Dy 2 o 3 Dissolve in hydrochloric acid, then add a 7-fold excess of NH 4 Cl, after the reaction, the solution was evaporated to dryness to obtain a non-hydrolyzed substance (NH 4 ) 3 ErCl 6 . The substance decomposes to DyCl after heating under vacuum 3 and NH 4 Cl.

[0018] (NH 4 ) 3 DyCl 6 →DyCl 3 +3 NH 4 Cl

[0019] Crystal growth of PbCl obtained by the method described above 2 And KCl as raw material. By 66.7mol% Pb...

Embodiment 2

[0020] Embodiment two: KPb 2 Cl 5 : Dy3+ Mid-infrared laser experiments on crystals

[0021] Cut and process a certain size, high-quality KPb 2 Cl 5 : Dy 3+ Laser devices, and conduct absorption and emission spectrum testing and research to determine the specific pump source and laser emission wavelength. According to these wavelength data, the resonant cavity mirror is coated, and a suitable laser resonant cavity is designed, using the ~1.34μm band Pumping with a suitable pump source, laser experiments were carried out to achieve tunable output of mid-infrared lasers in the 3.0μm-5.0μm band.

[0022] The experimental setup is shown in the attached figure. Figure 1 is the bulk LiLuF 4 Color center laser crystal; 2 is a suitable pump source in the ~1.34μm band; 3 is a dielectric mirror that totally reflects the wavelength of λ=3000nm~5000nm and transmits the wavelength of ~1.34μm; 4 is partially transmits the wavelength of λ=3000nm~5000nm And a dielectric mirror for tota...

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Abstract

In this invention, KPb2Cl5 is used as laser raw host material, Dy3+ is used as active ions to produce the invented product KPb2Cl5: Dy3+ laser crystal. And also KPb2Cl5 is used as laser host material, Dy3+ is used as active ions, and Yb3+ used as sensitizing ions to produce the invented product KPb2Cl5: Dy3+: Yb3+ laser crystal. Said crystals are used for realization of tunable output of middle infrared laser at 3.0 micron-5.0 micron wave band.

Description

Technical field: [0001] The invention relates to the field of laser crystal materials, in particular to a class of mid-infrared laser crystal KPb 2 Cl 5 : Dy 3+ and KPb 2 Cl 5 : Dy 3+ :Yb 3+ . Background technique: [0002] Mid-infrared lasers can be operated by several methods, among which the direct generation of mid-infrared radiation by laser crystals activated by rare earth or transition group ions is the most convenient and effective method, and it is a hot research topic at present. [0003] The main problem of laser crystals directly producing high-efficiency mid-infrared laser output is: because the mid-infrared laser frequency is very low, it is equivalent to the lattice vibration frequency of many famous laser crystals, that is, the phonon vibration frequency, which leads to rapid non-radiative relaxation and laser emission. The strong competition of , therefore, leads to high passive loss of the laser. In order to overcome this problem, materials with low...

Claims

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Application Information

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IPC IPC(8): C30B29/12C30B11/00H01S3/16
Inventor 涂朝阳李坚富王燕游振宇朱昭捷
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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