Cylindrical spreading of KDP single crystal by method of vaporization

Abstract

Abstract:

The cylindrical surfaces of the KDP(potassium dihydrogen phosphate) single crystal grow very slowly and the conical surfaces grow fast during the crystal growth under the traditional method. A KDP single crystal with large cross section（8mm×22mm×45mm）is gained at some constant temperature by vaporizing the solvent in our experiment. The experiment can be used for reference of KDP single crystal growth by pulling method. Compared with the traditional method, the growth rate along the cylindrical surface is improved effectively, especially the direction downward, which is on account of the dropping of the liquid level and the continued change of the solute boundary layer. The experience in purifying and preheating the solution and choosing the initial temperature is accumulated. The experiment is also useful for our later KDP crystal growth research.

Key words: nonlinear optics, KDP crystal, temperature-lowering method, boundary layer

CLC Number:

O782.1

XU Jun, WANG Yan, PANG Wan-wen, LIU Zhi-kun, BAI Li-hua, ZHANG Hui-fang. Cylindrical spreading of KDP single crystal by method of vaporization[J]. J4, 2012, 29(3): 353-356.

References

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Cylindrical spreading of KDP single crystal by method of vaporization

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