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Lead-gallium-germanium-sulfur crystal and preparing method and application thereof

A crystal and lead source technology, applied in the field of inorganic nonlinear optical materials, can solve the problem that the laser damage threshold needs to be improved

Active Publication Date: 2017-11-10
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, PbGa disclosed by Chem.Mater. (2015, Vol.27, 914–922) 2 GeSe 6 crystal, which is an infrared nonlinear optical material with I-type phase matching characteristics, and its frequency doubling effect and laser damage threshold are respectively AgGaS 2 5 times and 3.7 times, but the laser damage threshold of this material still needs to be improved

Method used

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  • Lead-gallium-germanium-sulfur crystal and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Weigh in air, take 0.45mmol lead chloride (0.125g), 0.05mmol lead sulfide (0.012g), 0.3mmol digallium trisulfide (0.071g) and 0.3mmol germanium disulfide (0.041g) fully Grinding and mixing;

[0045] (2) Put the above samples into a quartz tube with one end closed, and connect it to a vacuum line to evacuate and seal the tube with a vacuum degree of 0.01-10Pa;

[0046] (3) Heat the above vacuum-sealed quartz tube in a resistance furnace, keep it at 550°C for 100h, and then cool it down to room temperature at a rate of 5°C / h. When the tube is opened, it can be seen that there are light yellow transparent block crystals attached to the tube wall or at the bottom, which are lead gallium germanium sulfur crystals.

[0047] The prepared lead gallium germanium sulfur crystal is tested by a single crystal diffractometer, the crystal is orthorhombic, the space group is Fdd2, and the unit cell parameters are: α=90°, β=90°, γ=90°, Z=16.

[0048] The prepared lead galli...

Embodiment 2

[0050] (1) Weigh in air, get 0.5mmol lead chloride, 0.3mmol gallium trisulfide and 0.3mmol germanium disulfide and fully grind and mix;

[0051] (2) Put the above samples into a quartz tube with one end closed, and connect it to a vacuum line to evacuate and seal the tube with a vacuum degree of 0.01-10Pa;

[0052] (3) Heat the above vacuum-sealed quartz tube in a resistance furnace, keep it at 500° C. for 24 hours, and then cool it down to room temperature at a rate of 0.1° C. / h. When the tube is opened, it can be seen that there are light yellow transparent block crystals attached to the tube wall or at the bottom, which are lead gallium germanium sulfur crystals.

[0053] The crystal structure identification data are the same as in Example 1.

Embodiment 3

[0055] (1) Weigh in air, get 0.45mmol lead chloride, 0.05mmol lead sulfide, 0.3mmol gallium trisulfide and 0.3mmol germanium disulfide and fully grind and mix;

[0056] (2) Put the above samples into a quartz tube with one end closed, and connect it to a vacuum line to evacuate and seal the tube with a vacuum degree of 0.01-10Pa;

[0057] (3) Heat the above vacuum-sealed quartz tube in a resistance furnace, keep it at 650° C. for 60 hours, and then cool it down to room temperature at a rate of 10° C. / h. When the tube is opened, it can be seen that there are light yellow transparent block crystals attached to the tube wall or at the bottom, which are lead gallium germanium sulfur crystals.

[0058] The crystal structure identification data are the same as in Example 1.

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Abstract

The invention relates to the field of inorganic nonlinear optical materials, in particular to lead-gallium-germanium-sulfur crystal and a preparing method and application thereof. The chemical formula of the lead-gallium-germanium-sulfur crystal is PbGa2GeS6, the lead-gallium-germanium-sulfur crystal belongs to the orthorhombic system, the space group is Fdd2, and the unit cell parameters are (the parameters are shown in the description). The crystal has good nonlinear optical performance, the powder frequency doubling strength of the crystal is half that of AgGaS2, and the laser-damaged threshold value of the crystal is 5 times that of AgGaS2.

Description

technical field [0001] The application relates to the field of inorganic nonlinear optical materials, specifically, to a lead gallium germanium sulfur crystal, its preparation method and application. technical background [0002] Due to its laser frequency conversion function, nonlinear optical crystals have been widely used in civil and military high-tech fields, such as laser frequency doubling, film and television, printing and other modern laser technologies, optical communication and signal processing, military optical limiters, etc. The nonlinear optical crystals currently used in practice are mainly some inorganic oxides, such as LiB 3 o 5 (LBO), β-BaB 2 o 4 (BBO), KH 2 PO 4 (KDP), KTiOPO 4 (KTP), etc., the application range is mainly in the ultraviolet-visible to near-infrared bands, and there are obviously fewer nonlinear optical crystals that can be applied to the mid- and far-infrared bands, only AgGaS 2 , AgGaSe 2 , ZnGeP 2 Wait. [0003] Although these...

Claims

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Application Information

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IPC IPC(8): C30B29/46C30B9/06G02F1/355
CPCC30B9/06C30B29/46G02F1/3551
Inventor 黄一枝张浩程文旦柴国良
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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