Single-crystal material and preparation method and application

A single crystal material and unit cell technology, which is applied in polycrystalline material growth, single crystal growth, single crystal growth, etc., can solve the problem that the comprehensive performance cannot reach the ideal level of people

Active Publication Date: 2019-05-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Application Information

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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

Method used

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  • Single-crystal material and preparation method and application
  • Single-crystal material and preparation method and application
  • Single-crystal material and preparation method and application

Examples

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Embodiment 1

[0066] The preparation of embodiment 1 sulfur-zinc-indium-barium single crystal

[0067] BaSe, In 2 Se 3 , ZnSe was weighed according to the molar ratio of 10:6:7, mixed evenly, pressed into tablets, put into a graphite crucible, then put into a quartz tube, sealed after vacuuming, placed in a high-temperature furnace, and heated at a rate of 100°C / h Raise the temperature to 920°C, keep the temperature constant for 50 hours, cool down to 900°C at a cooling rate of 0.8°C / h, and then cool down to room temperature naturally to obtain orange-red crystals with the chemical formula Ba 10 In 6 Zn 7 Se 26 , belongs to the orthorhombic crystal system, recorded as sample 1#.

[0068] BaS, In 2 Se 3 , ZnSe was weighed according to the molar ratio of 10:6:7, mixed evenly, pressed into tablets, put into a graphite crucible, then put into a quartz tube, sealed after vacuuming, placed in a high-temperature furnace, and heated at a rate of 50°C / h Raise the temperature to 850°C, keep t...

Embodiment 2

[0069] Example 2 Structural testing of barium selenium zinc indium barium and sulfur selenium zinc indium barium single crystal

[0070] The X-ray powder diffraction phase analysis (XRD) of the selenium zinc indium barium and sulfur selenium zinc indium barium single crystal prepared in embodiment 1 is carried out on the MiniFlex II type X-ray diffractometer of Rigaku company, Cu target, Kα radiation source (λ = 0.154184 nm). Test results such as Figure 4 Shown, where (a) is Ba 10 In 6 Zn 7 S 10 Se 16 Powder diagram, (b) diagram is Ba 10 In 6 Zn 7 Se 26 Powder chart. The results show that the samples 1# and 2# prepared in Example 1 are samples with high purity and high crystallinity. Both samples 1# and 2# are crystals, both belong to the orthorhombic crystal system, and the space group I-42m.

[0071] The X-ray single crystal diffraction of the zinc indium barium selenium and barium sulfur selenium zinc indium barium single crystal prepared in embodiment 1 is car...

Embodiment 3

[0072] Example 3 Performance Test of Barium Selenium Zinc Indium Barium and Sulfur Selenium Zinc Indium Barium Single Crystal

[0073] The sample to be tested and the standard sample AgGaS 2 Grind separately, and use a standard sieve to sieve crystal samples with a particle size of 25-44 μm, 44-74 μm, 74-106 μm, 106-150 μm, and 150-210 μm, place the sample between two glass sheets and compact it, and make the sample have 0.5mm thick, then put it into a cylindrical aluminum box with a diameter of 8mm. Powder frequency doubling tests were performed on samples 1# and 2# single crystals using a Q-switched 2.05 μm infrared laser. The specific steps of the frequency doubling experiment of samples 1# and 2# are as follows: place the sample between the optical path of the 2.05 μm laser emitter and the 1.025 μm laser detector, and display the obtained frequency doubling optical signal on the oscilloscope, And by comparing the voltage intensity displayed by the oscilloscope, the perfo...

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Abstract

The invention discloses a single-crystal material. The single-crystal material has the chemical formula Ba10In6Zn7SnSe26-n shown in the formula I, wherein n is zero or ten. The crystal has an excellent infrared non-linear optical property, and especially, the crystal has the remarkable advantage in the infrared band transmission range.

Description

technical field [0001] This application relates to two kinds of single crystal materials, both of which belong to the field of infrared nonlinear optical materials and their preparation. 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 3-20 μm solid-state lasers in the mid- 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 cry...

Claims

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Application Information

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IPC IPC(8): C30B1/10C30B29/46G02F1/355
Inventor 柴国良周安宜林晨升程文旦张浩庞泳喻
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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