Crystal material, preparation method of crystal material, and application of crystal material as non-linear optical crystal

A crystal material and crystal structure technology, applied in nonlinear optics, polycrystalline material growth, optics, etc., can solve the problems that cannot be applied in the middle and far infrared range, low laser damage threshold, strong two-photon absorption, etc., and achieve excellent Infrared nonlinear optical performance, nonlinear optical performance improvement, and the effect of simple steps

Active Publication Date: 2016-07-13
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 materials contain light elements such as oxygen, so there are vibrational excitations in the infrared band, so they cannot be used in the mid- and far-infrared bands.
At present, the materials used in the mid-to-far infrared band mainly include AgGaS 2 , AgGaSe 2 and ZnGeP 2 , these materials have a large nonlinear coefficient and a wide transmission range in the application band, but they have disadvantages such as low laser damage threshold or strong two-photon absorption, which cannot meet the requirements of current laser development

Method used

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  • Crystal material, preparation method of crystal material, and application of crystal material as non-linear optical crystal
  • Crystal material, preparation method of crystal material, and application of crystal material as non-linear optical crystal

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Experimental program
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Effect test

Embodiment 1

[0047] The preparation of embodiment 1 powder crystal sample

[0048] Mix A source, Ge source, and Q source evenly, place them in a quartz reaction tube, and evacuate to 10 -4 Pa and use a hydrogen-oxygen flame to melt and seal the quartz reaction tube. Put the quartz reaction tube into the muffle furnace, heat it to the solid solution temperature, and keep it for a period of time. Then the temperature was lowered to 300° C. at a rate of 5° C. / hour, then the heating was stopped, cooled to room temperature naturally, washed with distilled water, and dried to obtain a powder crystal sample of the crystal material.

[0049] The sample number, raw material type, flux type and dosage, solid melting temperature and holding time are shown in Table 1.

[0050] Table 1

[0051]

Embodiment 2

[0052] The preparation of embodiment 2 single crystal sample

[0053] Raw material types and proportioning are the same as each sample in Example 1, and the raw materials are evenly ground and placed in a quartz reaction tube, and vacuumed to 10 -4 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 5 hours, then raise the temperature to 950°C and keep it for 24 hours, then cool it down to 300°C at a speed of no more than 5°C / hour, then stop heating and let it cool naturally to room temperature, washed with distilled water, and dried to obtain a single crystal sample of the crystal material (with a particle size between 0.05 mm and 2 mm). Using PII-1 # ~PII-4 # , PIII-1 # ~PIII-4 # The single crystal samples prepared by the ratio of raw materials are correspondingly recorded as SII-1 # ~SII-4 # , SIII-1 # ~SIII-4 # . As per sample PII-1 # The single ...

Embodiment 3

[0054] The structural characterization of embodiment 3 sample

[0055] Sample PII-1 # ~PII-4 # , PIII-1 # ~PIII-4 # and sample SII-1 # ~SII-4 # , SIII-1 # ~SIII-4 # X-ray powder diffraction phase analysis (XRD) after grinding was carried out on MiniFlex II X-ray diffractometer of Rigaku Company, Cu target, Kα radiation source (λ=0.154184nm). The results show that the samples prepared in Examples 1 and 2 are samples with high purity and high crystallinity.

[0056] Among them, PII-1 # ~PII-4 # , PIII-1 # ~PIII-4 # respectively with sample SII-1 # ~SII-4 # , SIII-1 # ~SIII-4 # Have the same powder XRD spectrum. That is, the position and shape of the diffraction peaks are the same, and the relative peak intensity fluctuates within ±5%. Description Sample PII-1 # ~PII-4 # , PIII-1 # ~PIII-4 # respectively with sample SII-1 # ~SII-4 # , SIII-1 # ~SIII-4 # correspond to the same crystal structure.

[0057] Sample SII-1 # ~SII-4 # , SIII-1 # ~SIII-4 # Th...

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Abstract

The invention discloses a crystal material,a preparation method of the crystal material and application of the crystal material as an infrared non-linear optical crystal material. The chemical formula of the crystal is AGexQy, wherein A is selected from at least one of Na, K, Rb and Cs; Q is selected from S or Se; x is equal to 1-2; y is equal to 3-5. The crystal material is excellent in infrared non-linear optical property. Tests show that the non-linear effect of the crystal material is 1-15 times of that of commercial AgGaS2, and the laser damage threshold of the crystal material is 1-20 times of that of AgGaS2. Compared with conventional commercial infrared non-linear crystal, the crystal material disclosed by the invention is greatly improved with respect of the non-linear optical property, and has significant commercial application values in the field of large-power lasers.

Description

technical field [0001] The application relates to a crystal material, its preparation method and its application as a nonlinear optical crystal, belonging to the field of nonlinear optical materials. Background technique [0002] Mid-to-far infrared laser sources have important applications in the military and civilian fields, and second-order nonlinear materials can produce light of different wavelengths due to laser frequency doubling and optical parametric oscillation effects, and play an irreplaceable role in mid-to-far infrared laser sources. After years of exploration and research in the field of nonlinear optical crystals, the current research in the visible and ultraviolet regions is relatively mature, and second-order nonlinear oxide materials such as KH 2 PO 4 (KDP), KTiOPO 4 (KTP), β-BaB 2 o 4 (BBO), LiB 3 o 5 (LBO), etc., basically meet the requirements for the development of lasers in the ultraviolet to visible range. These materials contain light element...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B1/10G02F1/355H01S3/16
CPCC30B1/10C30B29/46G02F1/3551H01S3/163
Inventor 刘彬文郭国聪曾卉一姜小明徐忠宁李淑芳
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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