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Infrared nonlinear optical crystal material, preparation method and application thereof

A nonlinear optics and crystal material technology, applied in the field of nonlinear optical materials, can solve the problems of unsatisfactory comprehensive performance, low laser damage threshold, large crystal growth, etc., and achieve excellent infrared nonlinear optical performance, simple steps, and crystallinity. Good results

Active Publication Date: 2015-04-22
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These crystals have been widely used in production, life, scientific research and military equipment, but these crystals also have their own shortcomings, such as low laser damage threshold, difficulty in growing large crystals, etc., and the overall performance cannot meet the growing needs of various applications

Method used

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  • Infrared nonlinear optical crystal material, preparation method and application thereof
  • Infrared nonlinear optical crystal material, preparation method and application thereof
  • Infrared nonlinear optical crystal material, preparation method and application thereof

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Experimental program
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Embodiment 1

[0035] The preparation of embodiment 1 powder crystal sample

[0036] Mix the raw materials with the flux, grind them evenly, place them in a quartz reaction tube, and vacuum them to 10 -2 Pa and use a hydrogen-oxygen flame to melt and seal the quartz reaction tube. Put the quartz reaction tube into a high-temperature furnace, heat it to the solid melting temperature, and keep it for a period of time. Then the temperature is programmatically lowered to 300° C. at a speed not exceeding 5° C. / hour, then the heating is stopped, and the nonlinear optical crystal material is obtained by naturally cooling to room temperature.

[0037] The sample number, type and ratio of raw materials, type and amount of flux, solid melting temperature and holding time are shown in Table 1. The substances represented only by element symbols in the table are simple substances.

[0038] Table 1

[0039]

[0040]

Embodiment 2

[0041] The preparation of embodiment 2 single crystal samples

[0042] Raw material type and proportioning are the same as sample 2 in embodiment 1 # , the raw materials and flux are ground evenly and placed in a quartz reaction tube, vacuumed to 10 -2 Pa and use a hydrogen-oxygen flame to melt and seal the quartz reaction tube. Put the quartz reaction tube into a high-temperature furnace, heat it to 650°C, keep it for 2 hours, then raise the temperature to 950°C and keep it for 24 hours, then cool it down to 300°C at a rate of no more than 5°C / hour, then stop heating and let it cool naturally to room temperature to obtain the single crystal sample of the nonlinear optical crystal material, denoted as sample 7 #.

Embodiment 3

[0043] The structural characterization of embodiment 3 sample

[0044] sample 1 # ~7 # The X-ray powder diffraction phase analysis (XRD) was carried out on the MiniFlex II X-ray diffractometer of Rigaku Company, Cu target, Kα radiation source (λ=0.154184nm). The result shows that the sample 1 prepared by embodiment 1 and 2 # ~7 # Both are samples of high purity and high crystallinity, typical representatives such as figure 1 Medium sample 1 # ~4 # The XRD spectrum. Sample 5 # ~Sample 7 # The XRD spectrum result and figure 1 The same, that is, the position and shape of the diffraction peaks are basically the same, and the relative peak intensity fluctuates within ±5%. Description Sample 1 # ~7 # have the same crystal structure.

[0045] Sample 7 # The X-ray single crystal diffraction was carried out on a Mercury CCD type single crystal diffractometer, Mo target, Kα radiation source (λ=0.07107nm), test temperature 293K. And through Shelxtl97 for structural analysi...

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Abstract

The invention discloses a nonlinear optical crystal material, a preparation method and application thereof. The material has excellent infrared nonlinear optical performance, and frequency multiplication intensity (particle size of 50-100 micrometers) able to reach 1-3 times that of AgGaS2 with the same particle size. The powder laser damaged threshold of the material can reach 100-260 times that of AgGaS2 with the same particle size and 1-3 times that of KTiOPO4(KTP) with the same particle size.

Description

technical field [0001] The application relates to an infrared nonlinear optical crystal material, a preparation method and an application thereof, belonging to the field of nonlinear optical materials. Background technique [0002] Infrared nonlinear optical materials have broad application prospects in civil, scientific research, and military applications, such as molecular spectroscopy, non-invasive medical testing, environmental monitoring, deep space exploration, space telescopes, infrared lidar, laser communication, photoelectric countermeasures, etc. At present, the mid-to-far infrared lasers of 2-20 microns are mainly obtained based on the principle of nonlinear optics and infrared nonlinear optical frequency conversion technology. Commercialized mid-to-far infrared nonlinear crystals mainly include AgGaS 2 , AgGaSe 2 , ZnGeP 2 Wait. These crystals have been widely used in production, life, scientific research and military equipment, but these crystals also have t...

Claims

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Application Information

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IPC IPC(8): C30B29/46C30B1/10G01V8/10H01S3/16
CPCC30B1/10C30B29/46G01V8/10H01S3/16
Inventor 张明建郭国聪曾卉一范玉航李淑芳李丙轩
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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