Infrared nonlinear optical single crystal sulfur tellurium indium barium

A technology of sulfur, tellurium, indium barium, and single crystal, which is applied in the field of infrared nonlinear optical materials, and can solve the problems that the comprehensive performance cannot reach people's ideal level.

Active Publication Date: 2015-05-20
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Problems solved by technology

These crystals have played a key role in civilian high-tech fields and military equipment, but the current comprehensive performance of these crystals can not reach people's ideal level. With the continuous development and progress of technology, the infrared nonlinear The requirements for crystals are also constantly increasing. Therefore, the exploration of new infrared nonlinear crystals has important strategic significance in the civilian high-tech industry and in upgrading military equipment.

Method used

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  • Infrared nonlinear optical single crystal sulfur tellurium indium barium
  • Infrared nonlinear optical single crystal sulfur tellurium indium barium
  • Infrared nonlinear optical single crystal sulfur tellurium indium barium

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Embodiment 1

[0020] Embodiment 1: Preparation of sulfur tellurium indium barium single crystal

[0021] According to the molar ratio of BaS:In:Te:S as 5:4:4:2, weigh BaS, In, Te and S and mix them evenly, put them into a graphite crucible, then put them into a quartz tube, seal it after vacuuming, and place In a high-temperature furnace, it takes 50 hours to bring the temperature up to 850°C, and keep the temperature at 850°C for 30 hours, and then slowly lowers to room temperature at a certain rate to obtain red blocky crystals. Through single crystal X-ray diffraction analysis, it is shown that the compound is barium sulfur telluride indium, and the crystal parameters are as follows:

[0022] The unit cell parameters are α=β=γ=90, Z=2. Space group Imm2. The molecular weight is 1880.75.

[0023] The crystal structure is attached as figure 1 shown.

[0024] Powder infrared frequency doubling experiments show that under the irradiation of 2.05 μm laser light, the single crystal of ...

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Abstract

The invention relates to an infrared nonlinear optical single crystal sulfur tellurium indium barium as well as preparation and an application thereof. The sulfur tellurium indium barium has the molecular formula of Ba5In4Te4S7, has the molecular weight of 1880.75, belongs to the orthorhombic crystal system, has space group of Imm2 and has the single cell parameter, the formula is as shown in specification. The sealed vacuum quartz tube and the graphite crucible are adopted and the high temperature reaction method is used. The SHG strength of the power with granularity of 74-106mu m is lower than the corresponding granularity of AgGaS2 tested by the experiment, the sulfur tellurium indium barium crystal has obvious advantage on the infrared band transmission side and has the broadband transmission range of 0.57-25 microns, and the sulfur tellurium indium barium crystal has excellent infrared nonlinear optical property.

Description

technical field [0001] The invention belongs to the field of infrared nonlinear optical materials. Background technique [0002] Infrared and mid-to-far infrared nonlinear optical materials have potential wide applications in civil and military applications, such as laser devices, infrared band laser frequency doubling, remote sensing, infrared laser guidance, infrared laser radar, photoelectric countermeasures, etc. [0003] At present, the generation of lasers in the 3-20 μm solid-state and far-infrared bands is mainly based on the principle of nonlinear optics and the frequency conversion technology of infrared nonlinear optical crystals. The mature infrared nonlinear optical crystals mainly include ZnGeP 2 , AgGaS 2 , AgGaSe 2 Wait. These crystals have played a key role in civilian high-tech fields and military equipment, but the current comprehensive performance of these crystals can not reach people's ideal level. With the continuous development and progress of tec...

Claims

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Application Information

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IPC IPC(8): C30B29/46C30B1/10G02F1/355
CPCC30B1/10C30B29/46G02F1/3551
Inventor 程文旦谭德明罗中箴林晨升张浩张炜龙
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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