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Infrared nonlinear optical crystal KAg3Ga8Se14 as well as preparation method and application thereof

A technology of nonlinear optics and crystals, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve problems such as limited applications, and achieve stable existence, stable physical and chemical properties, and good repeatability

Pending Publication Date: 2021-02-05
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

AGS including chalcopyrite structure (AgGaS 2 ) and ZGP (ZnGeP 2 ) and other relatively successful infrared nonlinear optical crystals have serious defects, which limit their application

Method used

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  • Infrared nonlinear optical crystal KAg3Ga8Se14 as well as preparation method and application thereof
  • Infrared nonlinear optical crystal KAg3Ga8Se14 as well as preparation method and application thereof
  • Infrared nonlinear optical crystal KAg3Ga8Se14 as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment

[0025] Weigh Ag according to the molar ratio of Ag:Ga:Se =3:8:14 2 O, Ga 2 o 3 and Se, add excess potassium iodide as K source and flux, add Ag 2 O, Ga 2 o 3 The B element in the corresponding molar ratio (B:O = 2:3) of the oxygen element in it is used as the reducing agent. After mixing and grinding, it was pressed into tablets, then sealed in a vacuumized quartz tube with a flame, reacted at 950 °C for more than 24 hours, and then slowly cooled to 300 °C at a cooling rate of 5 °C / hour to obtain orange KAg 3 Ga 8 Se 14 The product of the crystal is washed with distilled water or absolute ethanol, separated by ultrasonic treatment, and dried to obtain KAg 3 Ga 8 Se 14 crystals. Analysis by single crystal X-ray diffraction showed that the compound was KAg 3 Ga 8 Se 14 , the crystal parameters are as follows:

[0026] The unit cell parameters for this compound are: a = 12.8805(5) Å, b = 11.6857(4) Å, c = 9.6600(4) Å, α = gamma = 90°, β = 115.9980(1)°, Z...

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Abstract

The invention relates to an infrared nonlinear optical crystal KAg3Ga8Se14 as well as a preparation method and application thereof. The chemical formula of the crystal is KAg3Ga8Se14, the molecular weight is 2025.91, the crystal is crystallized in a non-centrosymmetric monoclinic system space group Cm, and the cell parameters are as follows: a = 12.8805 (5) angstroms, b = 11.6857 (4) angstroms, c= 9.6600 (4)angstroms, alpha = gamma = 90 degrees, beta = 115.9980 (1) degrees, Z = 2 and 1306.87 (9) angstrom<3>. The KAg3Ga8Se14 crystal provided by the invention has the advantages of high frequency doubling effect, high laser damage resistance threshold, wide infrared transmission range, stability in air and the like, is a novel infrared nonlinear optical crystal material, and can be used as anear-infrared nonlinear optical crystal to be applied to an all-solid-state laser.

Description

technical field [0001] The invention belongs to the technical field of nonlinear optical crystals, in particular to a second-order nonlinear optical crystal, its preparation method and its use as a nonlinear optical device. Background technique [0002] As a new type of functional material based on the application of laser technology, nonlinear optics (NLO) crystals have effects such as frequency doubling, sum frequency, difference frequency, and parametric amplification. Only crystals without a center of symmetry have nonlinear optical effects, and this A nonlinear optical crystal is an indispensable component for obtaining more wavelengths through laser frequency conversion. It is made into second harmonic generator, up and down frequency converter, optical parametric oscillator and other devices, which can be used in important fields such as laser weapons, laser storage, communication and sensing. [0003] The current nonlinear optical crystals in the ultraviolet, visibl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B1/10G02F1/355
CPCC30B29/46C30B1/10G02F1/3551
Inventor 郭胜平李佳诺
Owner YANGZHOU UNIV
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