Single crystal material, preparation method and applications thereof

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

Active Publication Date: 2019-05-07
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

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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  • Single crystal material, preparation method and applications thereof
  • Single crystal material, preparation method and applications thereof
  • Single crystal material, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Example 1 Ba 6 In 6 Zn 4 Se 19 and Ba 6 In 6 Zn 4 Se 10 S 9 Preparation of single crystals

[0067] BaSe, In 2 Se 3 , ZnSe was weighed according to the molar ratio of 6:3:4, mixed evenly, pressed into tablets, put into a graphite crucible, and 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 930°C, keep the temperature constant for 50 hours, and cool down to 900°C at a cooling rate of 1°C / h to obtain red crystals with the chemical formula Ba 6 In 6 Zn 4 Se 19 , 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 6:3:4, mixed evenly, pressed into tablets, put into a graphite crucible, and 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 930°C, keep the temperature constan...

Embodiment 2

[0069] Example 2 Ba 6 In 6 Zn 4 Se 19 and Ba 6 In 6 Zn 4 Se 10 S 9 Structural Testing of Single Crystals

[0070] The Ba of embodiment 1 preparation 6 In 6 Zn 4 Se 19 and Ba 6 In 6 Zn 4 Se 10 S 9 X-ray powder diffraction phase analysis (XRD) of single crystal was carried out on MiniFlex II X-ray diffractometer of Rigaku Company, Cu target, Kα radiation source (λ=0.154184nm). Test results such as Figure 4 As shown, the results show that the samples 1# and 2# prepared in Example 1 are samples of high purity and high crystallinity. Both samples 1# and 2# are crystals, both belong to orthorhombic crystal system, space group P-42 1 m.

[0071] The X-ray single crystal diffraction of the single crystal prepared in Example 1 was carried out on a Mercury CCD single crystal diffractometer, with a Mo target, a Kα radiation source (λ=0.07107nm), and a test temperature of 293K. And carry out structural analysis by Shelxl97, the structural diagram along (110) crystal ...

Embodiment 3

[0072] Example 3 Ba 6 In 6 Zn 4 Se 19 and Ba 6 In 6 Zn 4 Se 10 S 9 Single crystal performance test

[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 performance difference ...

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Abstract

The present invention discloses a single crystal material, which has a chemical formula represented by a formula I Ba6In6Zn4Sm-Se19-m, wherein m is 0 or 9. The crystal of the present invention has excellent infrared nonlinear optical properties, and especially has significant advantages in an 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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Patent Type & Authority Applications(China)
IPC IPC(8): C30B1/10C30B29/46
Inventor 柴国良周安宜林晨升程文旦张浩
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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