采用蒸发法实现KDP单晶柱面扩展

J4 ›› 2012, Vol. 29 ›› Issue (3): 353-356.

采用蒸发法实现KDP单晶柱面扩展

徐军,王燕,庞宛文,刘志坤,白丽华,张惠芳

上海大学理学院物理系，上海 200444

收稿日期:2011-03-31 修回日期:2011-04-11 出版日期:2012-05-28 发布日期:2012-05-22
通讯作者: 王燕，女，理学博士，副教授，从事非线性光学，晶体生长方面的研究。 E-mail:yanwang@staff.shu.edu.cn
作者简介:徐军（1983-），从事非线性光学晶体生长与特性研究。E-mail：xujun5099@126.com
基金资助:
国家自然科学基金（60407007, 60908006）

Cylindrical spreading of KDP single crystal by method of vaporization

XU Jun, WANG Yan, PANG Wan-wen, LIU Zhi-kun, BAI Li-hua, ZHANG Hui-fang

Department of Physics, College of Science, Shanghai University, Shanghai 200444

Received:2011-03-31 Revised:2011-04-11 Published:2012-05-28 Online:2012-05-22

摘要/Abstract

摘要：

传统的人工生长大尺寸KDP(磷酸二氢钾)单晶过程中，柱面生长很慢，锥面的生长速度较快。实验利用恒温蒸发溶剂的办法，生长出了截面较大的KDP单晶体（8mm×22mm×45mm）。柱面的生长速度较传统的溶液降温法得到了有效的提高，尤其是向下的方向更加明显，这主要是由于液面下降，溶质边界层浓度梯度发生持续变化促使晶体快速生长造成的。对溶液的提纯、预热以及起始温度选择等积累了经验。实验也为后续的晶体生长打下了很好的基础。

关键词: 非线性光学, KDP晶体, 溶液降温法, 边界层

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

中图分类号:

O782.1

徐军王燕庞宛文刘志坤白丽华张惠芳. 采用蒸发法实现KDP单晶柱面扩展[J]. J4, 2012, 29(3): 353-356.

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.

参考文献

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