Infrared Nonlinear Optics Single Crystal GaSn

A nonlinear optics and single crystal technology, applied in nonlinear optics, optics, single crystal growth, etc., can solve the problem that the comprehensive performance cannot meet people's ideal requirements

Active Publication Date: 2018-05-11
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These crystals have been used in the high-tech fields of civilian production and life and military equipment, but these crystal materials also have their own shortcomings, and they cannot meet people's ideal requirements in terms of comprehensive performance. With the development of technology and the improvement of requirements, it is necessary to Infrared nonlinear crystals with better performance. Therefore, the exploration of new mid- and far-infrared nonlinear crystals has important strategic significance in the civilian high-tech industry and the improvement of military equipment, and it is also a challenge for the synthesis and growth of crystal materials.

Method used

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  • Infrared Nonlinear Optics Single Crystal GaSn
  • Infrared Nonlinear Optics Single Crystal GaSn
  • Infrared Nonlinear Optics Single Crystal GaSn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1 Preparation of gallium tin selenide single crystal.

[0013] According to the Sn:Ga:Se element molar ratio of 4:4:10, weigh Sn, Ga and Se mix evenly, first put it into a graphite crucible, then put it into a quartz tube, vacuumize the quartz tube, seal it, and put it at a high temperature React in the furnace at 600°C for several hours, then keep the temperature at 850°C for tens of hours, and finally drop to room temperature slowly. There are light red blocky crystals in the crucible. Through single crystal X-ray diffraction analysis, it is shown that the compound is gallium tin selenide, the crystal parameters are as above, and the structure is as attached figure 1 shown.

Embodiment 2

[0014] Example 2 Preparation of gallium tin selenide polycrystalline powder

[0015] According to the Sn:Ga:Se element molar ratio of 4:4:10, weigh Sn, Ga and Se and mix evenly, first put it into a graphite crucible, then put it into a quartz tube, vacuumize the quartz tube, seal it, and place it at high temperature Keep the temperature in the furnace at 850°C for dozens of hours, and then slowly lower it to room temperature to obtain more red polycrystalline particles.

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Abstract

The invention discloses the synthesis and application of an infrared nonlinear optical single crystal gallium tin selenide. The molecular formula of the single crystal is: SnGa4Se7, the molecular weight is 950.31, it belongs to the monoclinic system, the space group Pc, and the unit cell parameter is a=7.577(4)b=6.666(3)c=13.023(8)(19)α=γ=90 °, β=106.680(7)°, V=630.1(6)Z=2. It is prepared by vacuum-sealed quartz tube and graphite crucible high-temperature reaction method. Gallium tin selenide crystals have excellent infrared nonlinear optical properties. According to experimental measurements, the SHG intensity of its powder (particle size 90-109 μm) is about 2.5 times that of the corresponding particle size AgGaS2 and meets the type I phase matching.

Description

technical field [0001] The invention belongs to infrared nonlinear optical crystal material and its preparation. Background technique [0002] Nonlinear optical crystal materials, we can mainly divide them into three categories: 1. Nonlinear optical materials in ultraviolet and deep ultraviolet bands; 2. Nonlinear optical materials in visible light and near-infrared bands; 3. Infrared and mid-far infrared nonlinear optical materials Material. The work of the present invention mainly focuses on infrared and mid-to-far infrared nonlinear optical materials, which have a wide range of potential uses in civil and military applications, such as laser devices, infrared band laser frequency doubling, infrared laser radar, laser communication, infrared filter devices , photoelectric countermeasures, etc. [0003] So far, the generation of 3-20 μm solid-state mid- and far-infrared lasers is mainly based on the principle of nonlinear optics and infrared nonlinear optical crystal freq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/355C30B29/52C30B1/10
Inventor 罗中箴李元兵林晨升程文旦张炜龙张浩
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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