人工晶体学报, 2020, 49 (3): 402, 网络出版: 2020-06-15
具有大尺寸(001)晶面的有机DAST晶体生长与THz波产生
Crystal Growth and Terahertz Generation of Organic DAST Crystal with Large (001) Surface Area
摘要
具有大尺寸(001)晶面的有机晶体DAST(4-(4-二甲基氨基苯乙烯基)甲基吡啶对甲苯磺酸盐)的生长对构建高强度宽带THz辐射源具有重要意义, 但也极具 挑战性。本论文采用斜板法结合缓慢冷却技术, 研究了生长液浓度对晶体长宽比的影响。通过对生长条件的精确控制, 生长出了具有大面积(001)晶面的DAST 晶体。经检测, 晶体具有良好的表面质量。晶体在无需表面抛光的条件下, 实现了单周期太赫兹脉冲输出, 光-太赫兹转换效率达到0.66%。
Abstract
The growth of DAST (4-N,N-dimethylamino- 4,-N,-methylstilbazolium tosylate) crystal with large (001) surface area is challengingbut necessary for intense broadband Terahertz(THz) sources. Here, the effect of the growth solution concentration on the crystal shapewere studied by slope nucleation method-coupled slow cooling(SNM-SC) technique. With careful control over the growth conditions, DASTcrystals with large (001) surface area were harvested. Surface morphology shows good surface quality. Without further surface polishing,this allowed to generate single cycle THz pulses with high optical-to-THz conversion efficiency reaching 0.66%.
由飞, 孙箐, 王田华, 曹丽凤, 钟德高, 滕冰. 具有大尺寸(001)晶面的有机DAST晶体生长与THz波产生[J]. 人工晶体学报, 2020, 49(3): 402. YOU Fei, SUN Qing, WANG Tianhua, CAO Lifeng, ZHONG Degao, TENG Bing. Crystal Growth and Terahertz Generation of Organic DAST Crystal with Large (001) Surface Area[J]. Journal of Synthetic Crystals, 2020, 49(3): 402.
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