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Preparation method of transition metal ion doped zinc selenide laser transparent ceramic

A transition metal ion, laser transparent technology, which is applied in the field of preparation of transition metal ion doped zinc selenide laser transparent ceramics, can solve the problem of restricting the development of directly pumped transition metal ion doped II-VI lasers, physical health damage, technology Complex process and other problems, to achieve the effect of good optical quality, low cost and simple process flow

Inactive Publication Date: 2022-04-22
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

[0005] The preparation methods of transition metal ion-doped II-VI group polycrystalline transparent ceramics mainly include thermal diffusion method and hot pressing method; thermal diffusion method is to use thermally activated transition metal ions to diffuse into II-VI materials, which is also the current preparation method. Transition metal ion doping II-VI laser material is the most widely used method; however, the transition metal ion doping II-VI group gain material prepared by thermal diffusion method has the defect that doping ions are enriched on the surface of the material (uneven distribution), This limits the development of directly pumping transition metal ion-doped II-VI lasers, and the preparation of transition metal ion-doped II-VI laser gain media takes a long period of several days to tens of days.
[0006] The hot pressing method mainly includes hot pressing sintering, hot isostatic pressing sintering and discharge plasma sintering. optical quality; the quality of raw material powder has an important influence on the quality of laser transparent ceramics, so the preparation of transition metal ion-doped zinc selenide powder is a key link in the process of preparing ceramics; but transition metal ion doped selenium It is difficult to directly purchase zinc selenide powder in the market, and when transition metal ion doped zinc selenide powder is prepared by co-precipitation method, toxic hydrogen selenide gas and other impurity substances will be produced. Hydrogen selenide gas is harmful to human health. Great harm, and the process of this method is complicated

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  • Preparation method of transition metal ion doped zinc selenide laser transparent ceramic
  • Preparation method of transition metal ion doped zinc selenide laser transparent ceramic

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Experimental program
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Effect test

Embodiment 1

[0035] 1) 2.5 grams of chemical vapor deposition zinc selenide polycrystalline block and 2.5 grams of thermal diffusion iron-doped zinc selenide polycrystalline block are put into a mortar and ground into powder;

[0036] 2) The iron-doped zinc selenide powder mixed and ground in step (1) is passed through a 200-mesh sieve;

[0037] 3) Put the powder of step (2) into the graphite mold, and separate the powder and the mold with a layer of molybdenum sheet and graphite paper respectively, to prevent the carbon element in the graphite mold from infiltrating the sample;

[0038] 4) Put the mold containing iron-doped zinc selenide powder in step (3) into the hot-press furnace, and when the vacuum degree of the hot-press furnace reaches 1×10 -3 At Pa, heat the sample to 850°C at a heating rate of 5°C / min, apply a pressure of 90MPa for hot pressing and sintering, and hold the heat for 120min to obtain the sample;

[0039] 5) Cool the hot-press furnace to room temperature at a coolin...

Embodiment 2

[0042] 1) 2.5 grams of chemical vapor deposition zinc selenide polycrystalline block and 2.5 grams of thermal diffusion iron-doped zinc selenide polycrystalline block are put into a mortar and ground into powder;

[0043] 2) The iron-doped zinc selenide powder mixed and ground in step (1) is passed through a 200-mesh sieve;

[0044] 3) Put the powder of step (2) into the graphite mold, and separate the powder and the mold with a layer of molybdenum sheet and graphite paper respectively, to prevent the carbon element in the graphite mold from infiltrating the sample;

[0045] 4) Put the mold containing iron-doped zinc selenide powder in step (3) into the hot-press furnace, and when the vacuum degree of the hot-press furnace reaches 1×10 -3At Pa, the sample was heated to 900°C at a heating rate of 5°C / min, the applied pressure was 90MPa hot-pressed sintering, and the heat preservation pressure was 120min to obtain the sample;

[0046] 5) Cool the hot-press furnace to room tempe...

Embodiment 3

[0049] 1) 2.5 grams of chemical vapor deposition zinc selenide polycrystalline block and 2.5 grams of thermal diffusion iron-doped zinc selenide polycrystalline block are put into a mortar and ground into powder;

[0050] 2) The iron-doped zinc selenide powder mixed and ground in step (1) is passed through a 200-mesh sieve;

[0051] 3) Put the powder of step (2) into the graphite mold, and separate the powder and the mold with a layer of molybdenum sheet and graphite paper respectively, to prevent the carbon element in the graphite mold from infiltrating the sample;

[0052] 4) Put the mold containing iron-doped zinc selenide powder in step (3) into the hot-press furnace, and when the vacuum degree of the hot-press furnace reaches 1×10 -3 At Pa, heat the sample to 1100°C at a heating rate of 5°C / min, apply a pressure of 90MPa for hot-press sintering, keep the temperature and hold the pressure for 120min, and obtain the sample;

[0053] 5) Cool the hot-press furnace to room te...

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Abstract

The invention discloses a preparation method of transition metal ion doped zinc selenide laser transparent ceramic. The preparation method comprises the following steps: grinding chemical vapor deposition zinc selenide and thermal diffusion transition metal ion doped zinc selenide polycrystalline block materials into powder in a mortar, then passing through a 200-mesh screen, then putting the powder into a graphite mold, and separating by using a metal molybdenum sheet and graphite paper; and finally, the mold is put into a hot pressing furnace to be sintered according to set sintering parameters. And cooling the hot pressing furnace to room temperature, taking out a sample, and polishing to obtain the transition metal ion doped zinc selenide laser transparent ceramic. The technological process is simple, the repeatability is high, the cost is low, adverse effects generated in the powder preparation process are avoided, and the ceramic preparation period is shortened. The transition metal ion doped zinc selenide laser transparent ceramic prepared by the invention has the advantages of uniform distribution of doped ions, excellent optical quality and mechanical properties and the like.

Description

technical field [0001] The invention relates to the technical field of laser materials, in particular to a preparation method of transition metal ion-doped zinc selenide laser transparent ceramics. Background technique [0002] The mid-infrared 2-5 μm band is located in two mid-infrared windows of 2-2.5 μm and 3.5-5 μm, and this band covers the absorption spectra of many atoms and molecules, so the mid-infrared 2-5 μm band usually has two atmospheric transmission windows and molecular fingerprint areas. Therefore, this band is widely used in many fields such as gas detection, optical communication, laser radar, infrared countermeasures and target detection. [0003] There are three methods for all-solid-state lasers to achieve mid-infrared laser output. The first is quantum cascade lasers; the second is optical parametric amplifiers (OPA) and optical parametric oscillators (OPO) using nonlinear frequency conversion. The conversion tunes visible or near-infrared light to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/547C04B35/622C04B35/63C04B35/645
CPCC04B35/547C04B35/622C04B35/6303C04B35/645C04B2235/602C04B2235/656C04B2235/6567C04B2235/5436C04B2235/5445C04B2235/6581C04B2235/6562C04B2235/6565C04B2235/9653
Inventor 余盛全罗永治陈岚敬畏胥涛康彬
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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