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Compound cesium lithium borate (CLBO) nonlinear optical crystal, preparation method and application thereof

A cesium nonlinear and optical crystal technology, which is applied to the compound lithium borate cesium nonlinear optical crystal and its preparation and application fields, can solve the problems of serious layered growth habit, long growth period, easy deliquescence of crystals, etc. Large crystal size, fast growth rate and good mechanical properties

Inactive Publication Date: 2011-02-16
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the crystal growth technology of these materials has become increasingly mature, there are still obvious shortcomings: such as crystal deliquescence, long growth cycle, serious layered growth habit and expensive price, etc.

Method used

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  • Compound cesium lithium borate (CLBO) nonlinear optical crystal, preparation method and application thereof
  • Compound cesium lithium borate (CLBO) nonlinear optical crystal, preparation method and application thereof
  • Compound cesium lithium borate (CLBO) nonlinear optical crystal, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Synthesis of lithium cesium borate (Li 4 Cs 3 B 7 o 14 ) compound:

[0039] Sintering is carried out at a high temperature of 550°C by a solid-state synthesis method, and its chemical formula is: Li 2 CO 3 +B 2 o 3 +Cs 2 CO 3 → Li 4 Cs 3 B 7 o 14 +NO 2 ↑+O 2 ↑;

[0040] Will Li 2 CO 3 、Cs 2 CO 3 、H 3 BO 3 Put it into a mortar with a stoichiometric ratio of 2:1.5:7, mix and grind it carefully, then put it into a Φ100mm×100mm open corundum crucible, press it tightly, put it in a muffle furnace, and slowly heat up to 450°C, Constant temperature for 5 hours, try to drive out the gas, take out the crucible after cooling, take out the sample and grind it evenly, then put it in the crucible, keep the temperature in the muffle furnace at 550°C for 48 hours, take it out, put it in the mortar and grind it Lithium cesium borate (Li 4 Cs 3 B 7 o 14 ) compound, and the compound is subjected to X-ray analysis, and the X-ray spectrum of the obtained X-ray spe...

Embodiment 2

[0046] Reaction formulaLiOH+H 3 BO 3 +CsOH→Li 4 Cs 3 B 7 o 14 +H 2 O ↑ Synthesis of Li 4 Cs 3 B 7 o 14 Compound, specific operation steps are carried out according to embodiment 1;

[0047] The synthesized lithium cesium borate compound and flux Cs 2 O Moore than Li 4 Cs 3 B 7 o 14 : Cs 2 O=1:0.5 was placed in a Φ100mm×100mm open platinum crucible, the crucible was placed in a crystal growth furnace, the temperature was raised to 780°C, and after a constant temperature of 20 hours, the temperature was lowered to 680°C, and Li 4 Cs 3 B 7 o 14 The seed crystal is fixed on the lower end of the seed rod with a platinum wire, and the seed crystal is introduced into the crucible from the small hole on the top of the furnace, so that the seed crystal is in contact with the liquid surface of the melt, and the temperature is lowered to 640°C, and the rotation speed of the seed rod is 20rpm. Break away from the melt level, drop to room temperature at a rate of 40°C / h,...

Embodiment 3

[0050] Reaction Li 2 C 2 o 4 ·nH 2 O+H 3 BO 3 +Cs 2 C 2 o 4 ·nH 2 O+O 2 → Li 4 Cs 3 B 7 o 14 +CO 2 ↑+H 2 O ↑ Synthesis of Li 4 Cs 3 B 7 o 14 Compound, specific operation steps are carried out according to embodiment 1;

[0051] The synthetic lithium cesium borate compound and the flux CsOH are molar ratio Li 4 Cs 3 B 7 o 14 : CsOH=1:1 Put into an open platinum crucible of Ф80mm×80mm, put the crucible into a crystal growth furnace, raise the temperature to 700°C, keep the temperature for 1 hour, then cool down to 632°C, cut lithium cesium borate along any axis The seed crystal is fixed on the lower end of the seed rod with a platinum wire, and the seed crystal is introduced into the crucible from the small hole on the top of the furnace, so that the seed crystal is in contact with the liquid surface of the melt. After the crystal growth is over, the crystal is lifted from the melt surface, cooled to room temperature at a rate of 100°C / h, and then the cryst...

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Abstract

The invention relates to a compound cesium lithium borate (CLBO) nonlinear optical crystal, which belongs to a trigonal system, and the chemical formula is Li4Cs3B7O14, the molecular weight is 726.14, the space group is P3121, the lattice parameters is as follows: a = 6.9313 (6), b = 6.9312 (6), c = 26.799 (4), Z = 3 and V = 1115.01 (19), and the mohs scale is 2 to 3; the compound grows crystals by using a flux growth method, and the CLBO nonlinear optical crystal prepared by using the method is used for preparing nonlinear optical devices. The compound is a melting compound prepared from different ingredients; and the prepared crystal is at least in a cm-level size, and has the advantages of quick preparation speed, simple operation, low cost, large size, wide nonopaque waveband, good mechanical performance, small possibility of crazing, stable physicochemical property, easy processing, and the like.

Description

technical field [0001] The invention relates to a compound lithium cesium borate nonlinear optical crystal, a preparation method and application thereof. Background technique [0002] At present, the main nonlinear optical materials used in the frequency conversion of ultraviolet and deep ultraviolet bands are: BBO (β-BBO), LBO (LiB 3 o 5 ) crystals, CBO (CsB 3 o 5 ) crystals, CLBO (CsLiB 6 o 10 ) crystals, SBBO(Sr 2 B 2 be 2 o 7 ) and KABO (K 2 al 2 B 2 o 7 ) and KBBF (KBe 2 BO 3 f 2 ) crystals. Although the crystal growth technology of these materials has become increasingly mature, there are still obvious deficiencies: such as crystal deliquescence, long growth cycle, serious layered growth habit and high price. Therefore, finding new nonlinear optical crystal materials is still a very important and arduous work. [0003] All solid-state lasers must rely on nonlinear optical crystals to generate harmonics in order to output ultraviolet and deep ultraviol...

Claims

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Application Information

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IPC IPC(8): C30B9/12C30B29/22
Inventor 潘世烈杨云
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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