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Sodium calcium fluorocarbonate compound and nonlinear optical crystal thereof, and crystal growth method

A sodium fluorocarbonate, nonlinear optics technology, applied in nonlinear optics, crystal growth, chemical instruments and methods, etc., can solve the problems of inability, poor structural integrity, poor optical uniformity, etc., and achieve good chemical stability Effect

Inactive Publication Date: 2014-04-09
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They overcome the layered habit of KBBF single crystal growth, but these crystals have not been able to replace KBBF single crystals so far, because SBBO and TBO crystals have poor structural integrity, and their macroscopic properties show very poor optical uniformity. Cannot be applied in practical devices; KABO and BABO crystals have good structural integrity and good optical uniformity, but because Al replaces Be, their absorption edge red shifts to about 180nm, which is difficult to be used in deep ultraviolet Harmonic output of

Method used

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  • Sodium calcium fluorocarbonate compound and nonlinear optical crystal thereof, and crystal growth method
  • Sodium calcium fluorocarbonate compound and nonlinear optical crystal thereof, and crystal growth method
  • Sodium calcium fluorocarbonate compound and nonlinear optical crystal thereof, and crystal growth method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Growth of Ca using hydrothermal reaction 2 Na 3 (CO 3 ) 3 F single crystal

[0027] Raw materials used: Na 2 CO 31.06g (0.01mol)

[0028] NaF 0.252g (0.006mol)

[0029] CaCl 2 0.222g (0.002mol)

[0030] The specific operation steps are as follows: after weighing the above-mentioned raw materials according to the above-mentioned dosage in the operation box, put them into a mortar, mix them evenly and grind them carefully, then put them into a 23ml hydrothermal kettle, pour 5mL of distilled water into the hydrothermal kettle Put it into an oven, slowly raise the temperature of the oven to 220°C, keep the temperature constant for 7 days, and then lower the temperature to 30°C at a cooling rate of 3°C per hour. After cooling, wash the sample with water and alcohol to obtain Ca 2 Na 3 (CO 3 ) 3 F is a single crystal with a size of 0.5×0.4×0.3 mm.

Embodiment 2

[0032] Growth of Ca using hydrothermal reaction 2 Na 3 (CO 3 ) 3 F single crystal

[0033] Raw materials used: Na 2 CO 3 10.6g (0.1mol)

[0034] NaF 2.52g (0.06mol)

[0035] CaCl 2 2.22g (0.02mol)

[0036] The specific operation steps are as follows: After weighing the above-mentioned raw materials according to the above-mentioned dosage in the operation box, put them into a mortar, mix them evenly and grind them carefully, then put them into a 200ml hydrothermal kettle, pour 50mL of distilled water, and put the hydrothermal kettle Put it into an oven, slowly raise the temperature of the oven to 220°C, keep the temperature constant for 7 days, and then lower the temperature to 30°C at a cooling rate of 3°C per hour. After cooling, wash the sample with water and alcohol to obtain Ca 2 Na 3 (CO 3 ) 3 F is a single crystal with a size of 3×2×2.5 mm.

Embodiment 3

[0038] The crystal that example 2 obtains is processed and cut, orientated, and placed in after polishing figure 1 In the position of 3 in the device shown, at room temperature, Q-switched Nd:YAG laser is used as the input light source, and the incident wavelength is 1064nm. Obvious 532nm frequency-doubled green light output is observed, and the output intensity is about 4 times that of KDP under the same condition. .

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Abstract

The invention relates to a novel nonlinear optical crystal sodium calcium fluorocarbonate of which the chemical formula is Ca2Na3(CO3)3F (CNCF for short). The crystal structure belongs to a monoclinic system, the space group is Cm, the cell parameters are alpha=gamma=90 degrees, beta=101.662 degrees and z=2, the unit cell volume is the double frequency coefficient which is 4 times of that of KH2PO4 (KDP). The ultraviolet absorption side is shorter than 200nm. A hydrothermal synthesis method is utilized to obtain the CNCF compound monocrystal under subcritical hydrothermal conditions. The Ca2Na3(CO3)3F has nonlinear optical effect, can be widely used in various nonlinear optical fields, and can widen the nonlinear optical application range of deep ultraviolet wave band.

Description

technical field [0001] The present invention relates to a novel optoelectronic functional material and its growth method and use, in particular to a nonlinear optical crystal material and its preparation method and use, i.e. calcium sodium fluorocarbonate, whose chemical formula is Ca 2 Na 3 (CO 3 ) 3 F, CNCF for short. technical background [0002] The nonlinear optical effect of crystal refers to such an effect: when a laser beam with a certain polarization direction passes through a nonlinear optical crystal (such as CNCF) in a certain incident direction, the frequency of the beam will change. [0003] Crystals with nonlinear optical effects are called nonlinear optical crystals. The use of nonlinear optical crystals for laser frequency conversion broadens the range of laser wavelengths and makes the application of lasers more extensive. Especially borate nonlinear optical crystals such as BBO, LBO, KBBF, SBBO, TBO, KABO, BABO and other crystals have attracted much a...

Claims

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Application Information

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IPC IPC(8): C30B29/12C30B7/00G02F1/355
Inventor 叶宁罗敏
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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