Infrared nonlinear optical crystal Ba10Zn7M6Q26 and preparation method and application thereof

A ba10zn7m6q26, nonlinear optics technology, applied in the field of inorganic nonlinear optical crystal materials, can solve the problems of small birefringence, low laser damage threshold, and limited practical application

Active Publication Date: 2019-05-14
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these crystalline materials have their own defects, such as low laser damage threshold, low birefringence or two-photon absorption, etc., which limit their practical applications.

Method used

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  • Infrared nonlinear optical crystal Ba10Zn7M6Q26 and preparation method and application thereof
  • Infrared nonlinear optical crystal Ba10Zn7M6Q26 and preparation method and application thereof
  • Infrared nonlinear optical crystal Ba10Zn7M6Q26 and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The raw materials barium (Ba), zinc (Zn), indium (In), and sulfur (S) are weighed in a molar ratio of barium:zinc:indium:sulfur = 10:7:6:26 and weighed in a total amount of 0.3-1.5 grams. The co-solvent cesium bromide (CsBr) and potassium bromide (KBr) in molar ratio is cesium bromide: potassium bromide = 6:4 and weighed an amount equal to the total weight of raw materials. Place the graphite crucible with the raw material and flux mixture in the quartz reaction tube coated with carbon film on the inner wall, and vacuum to 10 -3 Pa, and use a hydrogen-oxygen flame to melt and seal the quartz reaction tube. Put the sealed quartz reaction tube into a tube furnace with a temperature controller, heat it to 950°C, and keep it for at least 100h. Then programmatically lower the temperature to 300°C at a rate of no more than 5°C / h, stop heating, and cool naturally to room temperature. The resulting product was washed with deionized water and dried with ethanol to obtain compo...

Embodiment 2

[0053] Raw material barium (Ba), zinc (Zn), gallium (Ga), selenium (Se) in molar ratio is barium: zinc: gallium: selenium=10:7:6:26 and takes by weighing 0.5 gram of total amount, places graphite in the crucible. Place the graphite crucible with raw materials in the quartz reaction tube, and vacuum to 10 - 3 Pa, and use a hydrogen-oxygen flame to melt and seal the quartz reaction tube. Put the sealed quartz reaction tube into a tube furnace with a temperature controller, heat it up to 700-800°C after 35 hours, keep it warm for no less than 20 hours, then heat it up to 900-1000°C after 15 hours, and keep it warm for no less than 100 hours , after 100 hours to 750 ℃, keep warm for 50 hours, then after 100 hours to 300 ℃, then cut off the power of the furnace, and naturally drop to room temperature. Compound Ba can be obtained 10 Zn 7 Ga 6 Se 26 the target crystal.

Embodiment 3

[0055] With the Ba prepared in Example 1 10 Zn 7 In 6 S 26 and the Ba prepared in Example 2 10 Zn 7 Ga 6 Se 26 Structural characterization of nonlinear optical crystal materials.

[0056] The X-ray single crystal diffraction of crystal material is carried out on a Mercury CCD type single crystal diffractometer, Mo target, Kα radiation source (λ=0.07107nm), test temperature is 293K. And analyze its structure through Shelxtl2014. Its crystallographic data results are shown in Table 1, and the schematic diagram of the crystal structure is shown in figure 1 shown.

[0057] Table 1. Sample Ba 10 Zn 7 In 6 S 26 and Ba 10 Zn 7 Ga 6 Se 26 The crystallographic data of

[0058]

[0059] like figure 1 Shown, the compound Ba 10 Zn 7 In 6 S 26 The three-dimensional framework is composed of Zn x In 1-x S 4 (x=0.431) tetrahedron and Zn x In 1-x S 4 (x=0.632) The tetrahedra (T2 type) composed of tetrahedrons are connected by sharing S atoms in a ratio of 1:2,...

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Abstract

The invention discloses infrared nonlinear optical crystal Ba10Zn7M6Q26 and a preparation method and application thereof. The molecular formula of the infrared nonlinear optical crystal is Ba10Zn7M6Q26, wherein M is selected from In or Ga, and Q is selected from S or Se. The infrared nonlinear optical crystal belongs to a tetragonal system, and the space group of the infrared nonlinear optical crystal is I-42m. By taking a crystal compound with the molecular formula being Ba10Zn7In6S26 as an example, the compound is an I type non-phase-match nonlinear optical material under the laser of 2.05 micrometers, the powder frequency doubling response of the compound is 4.1 times of that of commercial AgGaS2 in the particle size range of 30-46 micrometers, and the laser-induced damage threshold ofthe compound is 37.2 times of that of AgGaS2 in the particle size range of150-210 micrometers. The compound is promising in application prospect in military and civil fields and applicable to fields such as electro-optical countermeasure, resource detection, space missile defense and communication.

Description

technical field [0001] The invention relates to infrared nonlinear optical crystal Ba 10 Zn 7 m 6 Q 26 The preparation method and application thereof belong to the technical field of inorganic nonlinear optical crystal materials. Background technique [0002] Infrared nonlinear optical crystals are widely used in military and civilian fields. For example, it can be applied to laser infrared countermeasures, laser aiming, infrared remote sensing, laser communication, trace gas detection, medical diagnosis and treatment, molecular spectroscopy, etc. However, relatively mature nonlinear optical crystals such as borate (β-BaB 2 o 4 (BBO), LiB 3 o 5 (LBO) and CsB 3 o 5 (CBO)), phosphate (KTiPO 4 (KTP) and KH 2 PO 4 (KDP)), etc., due to the vibration absorption of metal and oxygen chemical bonds, these oxide crystal materials have extremely poor infrared transmission, which limits their application in the infrared region. [0003] At present, the infrared nonlinear o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B1/10G02F1/355
Inventor 黎艳艳陈玲吴立明王磊
Owner QINGDAO UNIV OF SCI & TECH
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