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Cs2GeB4O9 compound and single crystal thereof

A compound, single crystal technology, applied in the field of new nonlinear optical crystal materials

Active Publication Date: 2013-02-27
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Related work has not been reported in the literature so far

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  • Cs2GeB4O9 compound and single crystal thereof
  • Cs2GeB4O9 compound and single crystal thereof
  • Cs2GeB4O9 compound and single crystal thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Synthesis of Compound Cs by High Temperature Solid Phase Synthesis 2 GeB 4 o 9

[0026] Raw materials used: Cs 2 CO 3 3.258g (0.01mol)

[0027] GeO 2 1.046g (0.01mol)

[0028] B 2 o 3 1.392 g, (0.02 mol)

[0029] Its chemical reaction equation is:

[0030] Cs 2 CO 3 + GeO 2 + 2B 2 o 3 = Cs 2 GeB 4 o 9 + CO 2 ↑

[0031] The specific operation steps are as follows: after the above-mentioned raw materials are weighed according to the above-mentioned dosage, they are carefully ground in a mortar, mixed evenly, put into a platinum crucible, put into a muffle furnace, heated to 600°C, and pre-fired at a constant temperature for 5 hours. Then take out the crucible after cooling, pour out the sample, re-grind evenly, put it into the platinum crucible again, sinter in the muffle furnace at 800°C for 50 hours, and turn off the power of the muffle furnace. After cooling, take out the crucible to get a lumpy white sample, which is the com...

Embodiment 2

[0033] Synthesis of Compound Cs by High Temperature Solid Phase Synthesis 2 GeB 4 o 9

[0034] Raw materials used: Cs 2 CO 3 3.258g (0.01mol)

[0035] GeO 2 1.046g (0.01mol)

[0036] HBO 3 2.473 g, (0.04 mol)

[0037] Its chemical reaction equation is:

[0038] Cs 2 CO 3 + GeO 2 + 4H 3 BO 3 = Cs 2 GeB 4 o 9 + CO 2 ↑+6H 2 O↑

[0039] The specific operation steps are as follows: after the above-mentioned raw materials are weighed according to the above-mentioned dosage, they are carefully ground in a mortar, mixed evenly, put into a platinum crucible, put into a muffle furnace, heated to 600°C, and pre-fired at a constant temperature for 5 hours. Then take out the crucible after cooling, pour out the sample, re-grind evenly, put it into the platinum crucible again, sinter in the muffle furnace at 800°C for 50 hours, and turn off the power of the muffle furnace. After cooling, take out the crucible to get a lumpy white sample, which is...

Embodiment 3

[0041] Growth of Cs by molten salt method 2 GeB 4 o 9 the crystal

[0042]The heating device for crystal growth is an ordinary muffle furnace, the temperature control device is Xiamen Yudian AI-808P temperature controller, and the heat sensing device is a platinum-rhodium thermocouple. Choose Cs 2 O-B 2 o 3 The system acts as a flux to spontaneously nucleate and grow crystal Cs 2 GeB 4 o 9 crystals.

[0043] Raw materials used: Cs 2 CO 3 2.281g (0.007mol)

[0044] GeO 2 0.523g (0.005mol)

[0045] HBO 3 1.917 g (0.031 mol)

[0046] The specific operation steps are as follows: after the above-mentioned raw materials are weighed according to the above-mentioned dosage, mix them evenly, put them into a platinum crucible, put them into a muffle furnace, raise the temperature to 900°C until the original is completely melted, keep the temperature for 10 hours, and then quickly cool down to the saturation temperature Above 5-10°C, then lower the tem...

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Abstract

The invention relates to a Cs2GeB4O9 compound, a single crystal thereof, a preparation method and application thereof. The compound belongs to tetragonal crystal system, has a space group shown as below, unit cell parameters satisfying the relations of: alpha =beta = gamma = 90 DEG C, and Z = 2, and unit cell volume as below. The Cs2GeB4O9 crystal has powder effect of second harmonic generation 2.8 times of that of KH2PO4 (KDP), and has ultraviolet cutoff at 198 nm.

Description

technical field [0001] The invention relates to a novel nonlinear optical crystal material. Background technique [0002] In recent years, with the application of ultraviolet laser in semiconductor lithography, biomedicine, laser spectroscopy and other scientific and technological fields, the all-solid-state ultraviolet laser system has developed rapidly. With its advantages of small size, stable performance, high beam quality and low maintenance cost, There is a tendency to replace excimer lasers in the ultraviolet laser band. Therefore, as the core component of an all-solid-state ultraviolet laser system, nonlinear optical crystals capable of generating ultraviolet harmonics have broad application prospects. At present, among the large number of nonlinear optical crystals that have been reported, the nonlinear optical crystals that can be used for ultraviolet laser output are mainly concentrated in the borate system, such as β-BaB 2 o 4 (BBO), LiB 3 o 5 (LBO), CsLiB...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B35/12C30B29/22C30B9/06
Inventor 毛江高徐翔
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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