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Application of potassium sulfate in preparation of nonlinear optical devices

A technology of nonlinear optics and devices, applied in the direction of nonlinear optics, optics, chemical instruments and methods, etc., can solve the problems of small birefringence, large birefringence, difficult to obtain, etc., and achieve stable physical and chemical properties, mechanical properties Good, easy processing effect

Inactive Publication Date: 2019-01-25
MINJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the birefringence of LBO is relatively small, and the quadrupling output of 1064 nm wavelength laser cannot be realized; the birefringence of BBO is relatively large, and there is a photorefractive effect when used for quadrupling output of 1064 nm wavelength laser, which limits However, CLBO is extremely deliquescent and difficult to achieve commercial applications; KBBF is difficult to obtain due to its severe layered growth habit. c thicker crystals

Method used

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  • Application of potassium sulfate in preparation of nonlinear optical devices
  • Application of potassium sulfate in preparation of nonlinear optical devices
  • Application of potassium sulfate in preparation of nonlinear optical devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Powdered K 2 Zn 2 (SO 4 ) 3 Compound preparation

[0023] Adopt solid phase reaction method to prepare, and its reaction equation is as follows:

[0024] K 2 SO 4 +2ZnSO 4 ·H 2 O = K 2 Zn 2 (SO 4 ) 3 +2H 2 O↑.

[0025] The specific operation steps are: Weigh K respectively 2 SO 4 1.743g (0.010mol), ZnSO 4 ·H 2 O 3.589g (0.020 mol), put them into a mortar, mix and grind evenly, put them into a platinum crucible, compact them, put them in a muffle furnace, and heat up to 200°C at a rate of 10°C / hour ℃, heat preservation and sintering for 24 hours, then lower to room temperature, take it out, grind evenly, then raise the temperature to 400 ℃ at a rate of 10 ℃ / hour, sinter for 48 hours, take it out and grind it more than once in the middle, and obtain the pure phase K2 Zn 2 (SO 4 ) 3 compound.

[0026] Such as figure 1 As shown, the powder X-ray diffraction pattern of the prepared compound is consistent with that obtained by fitting the sin...

Embodiment 2

[0027] Example 2 Powdered K 2 Zn 2 (SO 4 ) 3 Compound preparation

[0028] Adopt solid phase reaction method to prepare, and its reaction equation is as follows:

[0029] K 2 SO 4 +2ZnSO 4 ·7H 2 O = K 2 Zn 2 (SO 4 ) 3 +14H 2 O↑.

[0030] The specific operation steps are: Weigh K respectively 2 SO 4 1.743g (0.010mol), ZnSO 4 ·7H 2 O 5.751g (0.020 mol), put them into a mortar, mix and grind evenly, put into a corundum ceramic crucible, compact it, put it in a muffle furnace, and heat up to 200 ℃, heat preservation and sintering for 24 hours, then lower to room temperature, take it out, grind evenly, then raise the temperature to 400 ℃ at a rate of 50 ℃ / hour and sinter for 48 hours, take it out and grind it more than once in the middle, and then get the pure phase K 2 Zn 2 (SO 4 ) 3 compound.

Embodiment 3

[0031] Example 3K 2 Zn 2 (SO 4 ) 3 Crystal preparation

[0032] The K was prepared by melt growth 2 Zn 2 (SO 4 ) 3 Nonlinear optical crystal, it is the K prepared by embodiment 1 or embodiment 2 2 Zn 2 (SO 4 ) 3 The compound is placed in a crystal growth furnace, kept at 480-580°C for more than 2 hours to melt into a melt, and then the saturation temperature of the melt is measured, then the temperature of the melt is lowered to 5°C below the saturation temperature, and then The temperature was slowly lowered to 400°C at 1.5°C / day, and then rapidly lowered to room temperature to obtain the crystals.

[0033] figure 2 It is the millimeter-scale transparent crystal prepared in Example 3, which is not easily broken and does not absorb moisture.

[0034] After testing, the prepared K 2 Zn 2 (SO 4 ) 3 Nonlinear optical crystals do not contain a center of symmetry and belong to the cubic crystal system P 2 1 3 space group; its unit cell parameters are a = b = ...

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Abstract

The invention discloses application of K2Zn2(SO4)3 in preparation of nonlinear optical devices. The K2Zn2(SO4)3 is a nonlinear optical crystal which is prepared by sintering potassium sulfate and zincsulfate as raw materials to prepare K2Zn2(SO4)3 powder and then fusing the K2Zn2(SO4)3 powder. The prepared K2Zn2(SO4)3 crystal is transparent and free of inclusions, has the advantages of faster growth, low cost and the like, also has the advantages of shorter ultraviolet absorption cut-off edge, larger nonlinear optical effect, stable physical and chemical performance, good mechanical properties, easy processing and the like, can be used for manufacturing laser-induced blinding weapons, laser discs, laser projection televisions, optical computing, optical fiber communication and other nonlinear optical devices.

Description

technical field [0001] The invention belongs to the technical field of optical crystals, in particular to a K 2 Zn 2 (SO 4 ) 3 Applications in the preparation of nonlinear optical devices. Background technique [0002] The nonlinear optical effect of crystal means that when a beam of laser light with a certain polarization direction passes through a nonlinear optical crystal in a certain direction, the frequency of the beam will change. Crystals with nonlinear optical effects are called nonlinear optical crystals. Using the nonlinear optical effect of crystals, nonlinear optical devices such as second harmonic generators, up and down frequency converters, and optical parametric oscillators can be made, and all-solid-state lasers that use nonlinear optical crystals for frequency conversion are also future A development direction of lasers, but the key lies in obtaining excellent nonlinear optical crystals. [0003] At present, the nonlinear optical crystals used in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/46C30B11/02G02F1/355
Inventor 贾俊荣
Owner MINJIANG UNIV
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