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Nonlinear optical crystal material, preparation method and application thereof

A technology of nonlinear optics and nonlinear crystals, 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 and excellent infrared nonlinear Excellent optical properties and crystallinity

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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  • Nonlinear optical crystal material, preparation method and application thereof
  • Nonlinear optical crystal material, preparation method and application thereof
  • Nonlinear optical crystal material, preparation method and application thereof

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Embodiment 1

[0030] The preparation of embodiment 1 powder crystal sample

[0031] Ga 2 o 3 , boron and selenium according to Ga 2 o 3 :B:Se=1:2:3 molar ratio, mixed with flux, ground evenly, 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 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, cooled naturally to room temperature, washed with distilled water to remove flux, and dried to obtain the nonlinear optical crystal material.

[0032] The sample number, raw material type, flux type and dosage, solid melting temperature and holding time are shown in Table 1.

[0033] Table 1

[0034]

Embodiment 2

[0035] The preparation of embodiment 2 single crystal sample

[0036] Raw material type and proportioning are the same as sample 1 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 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 to remove flux KI, and dried to obtain a single crystal sample of the nonlinear optical crystal material, which is designated as sample 4 # .

Embodiment 3

[0037] The structural characterization of embodiment 3 sample

[0038] sample 1 # ~4 # 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 # ~4 # Both are samples of high purity and high crystallinity, typical representatives such as figure 1 Medium sample 4 # The XRD spectrum. sample 1 # , Sample 2 # , sample 3 # The XRD spectrum result and figure 1 The same, that is, the same diffraction peak position and shape, and the relative peak intensity fluctuates within ±5%. Description Sample 1 # ~4 # have the same crystal structure.

[0039] Sample 4 # 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 analysis. The theoretic...

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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 properties, frequency multiplication intensity that reaches 9.3 times that of the same particle size AgGaS2, and satisfies type I phase matching. The powder laser-damaged threshold of the material can be 7.5 times that of the same particle size AgGaS2. The material provided by the invention has important application value in middle and far infrared wave band laser multiplication, sum frequency, difference frequency, optical parametric oscillation and other frequency-converters.

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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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B1/10G01V8/10H01S3/16
CPCC30B1/10C30B29/46
Inventor 张明建郭国聪曾卉一刘彬文刘勇李丙轩
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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