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Infrared non-linear dissimilar metal sulfantimonate optical crystals as well as preparation and application thereof

A metal thioantimonate and optical crystal technology, which is applied in nonlinear optics, optics, crystal growth, etc., can solve the problems of difficult phase matching, difficult preparation of pure phase of compounds, low laser damage threshold, etc., and the method is simple Effect

Inactive Publication Date: 2018-12-21
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these materials are currently prepared by high-temperature solid-state synthesis, and the pure phase of the compound is difficult to prepare, the laser damage threshold is low, and it is difficult to achieve phase matching, which limits their application.

Method used

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  • Infrared non-linear dissimilar metal sulfantimonate optical crystals as well as preparation and application thereof
  • Infrared non-linear dissimilar metal sulfantimonate optical crystals as well as preparation and application thereof
  • Infrared non-linear dissimilar metal sulfantimonate optical crystals as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The raw materials rubidium carbonate or cesium carbonate, silver powder, antimony powder, sulfur powder, ionic liquid and organic amine are sealed in a polytetrafluoroethylene-lined reactor for ionothermal reaction. The reaction temperature is 140-240°C and the reaction time is 1-2. 10 days, then slowly cool down to 30°C, the cooling rate is 0.5-30°C / day, filter and wash, you can get M 2 Ag 3 Sb 3 S 7 , the specific operation is as follows: mix the rubidium (cesium) source, silver source, sulfur source, antimony source, ionic liquid and organic amine according to a certain proportion to obtain the initial gel mixture, and seal the initial gel mixture in 25mL polytetrafluoroethylene In the lined reaction kettle, put it into a box-type resistance furnace, crystallize at the crystallization temperature for a period of time, filter, wash, and dry to obtain yellow needle-like M 2 Ag 3 Sb 3 S 7 Two crystal samples. Table 1 shows the relationship between the types and p...

Embodiment 2

[0052] Adopt the preparation method similar to embodiment 1, difference is:

[0053] (1) The rubidium source or cesium source used is rubidium chloride, the silver source used is silver nitrate, the antimony source used is antimony chloride, the sulfur source used is sulfur powder, and the ionic liquid used is 1-butyl- 3-methylimidazolium chloride salt, the organic amine used is propylene diamine, rubidium element, silver element, antimony element, sulfur element, 1-butyl-3-methylimidazolium chloride salt and propanediamine in the initial gel mixture The molar ratio of amine is Rb:Ag:Sb:S:1-butyl-3-methylimidazolium chloride:propylenediamine=1:5:5:50:50:50;

[0054] (2) The adopted crystallization temperature is 140° C., and the crystallization time is 100 hours.

[0055] After testing, the prepared compound Rb 2 Ag 3 Sb 3 S 7 The crystal has a large frequency doubling effect, respectively KH 2 PO 4 (KDP) crystal 2.3 times and 2.6 times.

Embodiment 3

[0057] Adopt the preparation method similar to embodiment 1, difference is:

[0058] (1) The rubidium source or cesium source used is rubidium hydroxide, the silver source used is silver iodide, the antimony source used is antimony sulfide, the sulfur source used is antimony sulfide, and the ionic liquid used is 1-butyl-3- Methylimidazolium chloride salt, the organic amine used is butanediamine, the rubidium element, silver element, antimony element, sulfur element, 1-butyl-3-methylimidazolium chloride salt and butanediamine in the initial gel mixture The molar ratio is Rb: Ag: Sb: S: 1-butyl-3-methylimidazolium chloride: butanediamine = 2: 10: 5: 15: 20: 50;

[0059] (2) The adopted crystallization temperature is 180° C., and the crystallization time is 60 hours.

[0060] After testing, the prepared compound Rb 2 Ag 3 Sb 3 S 7 The crystal has a large frequency doubling effect, respectively KH 2 PO 4 (KDP) crystal 2.3 times and 2.6 times.

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Abstract

The invention relates to infrared non-linear dissimilar metal sulfantimonate optical crystals as well as preparation and application thereof. A chemical formula of the material is M2Ag3Sb3S7, when preparing the material, a rubidium source or a caesium source is mixed with a silver source, an antimony source, a sulfur source, ionic liquid and organic amine to form a primary gel mixture; then crystallization is carried out so as to obtain the infrared non-linear dissimilar metal sulfantimonate optical crystals; the material can be used in a laser frequency converter. Compared with the prior art,the infrared non-linear dissimilar metal sulfantimonate optical crystals disclosed by the invention have larger multiple frequency effect, and the effect of the crystals is 2.3 to 2.6 times of KH2PO4(KDP) crystals. In addition, the crystal material has a wider penetration range (0.6 to 20 micrometers), and the penetration of two atmospheric windows of 3 to 5 micrometers and 8 to 12 micrometers ina middle infrared area can be met, and the crystals have wide application prospects in the fields of middle infrared second-order non-linear optics, electrooptical modulation, photorefractive information processing and the like.

Description

technical field [0001] The invention relates to the technical field of optical crystal materials, in particular to an infrared nonlinear heterometallic thioantimonate optical crystal and its preparation and application. Background technique [0002] The typical feature of the second-order nonlinear optical crystal is the frequency doubling effect (SHG). It is an important optoelectronic functional material and is widely used in frequency doubling devices, electro-optic modulation, and holographic storage elements. A large number of metal chalcogenides with non-central structure have excellent second-order nonlinear optical properties in the infrared range, which has attracted extensive interest of researchers at home and abroad. Mid-infrared nonlinear optical crystals that have been widely used in the market include AgGaS 2 ,AgGaSe 2 and ZnGeP 2 . However, most of these materials are currently prepared by high-temperature solid-state synthesis, and the pure phase of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B5/00G02F1/355
CPCC30B5/00C30B29/46G02F1/3551
Inventor 张弛杨刚吴超林霖
Owner TONGJI UNIV
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