具有大尺寸(001)晶面的有机DAST晶体生长与THz波产生

人工晶体学报 ›› 2020, Vol. 49 ›› Issue (3): 402-406.

具有大尺寸(001)晶面的有机DAST晶体生长与THz波产生

由飞;孙箐;王田华;曹丽凤;钟德高;滕冰

青岛大学物理科学学院,青岛,266071

出版日期:2020-03-15 发布日期:2021-01-20
基金资助:
National Natural Science Foundation of China(51172111,51402159);Shandong Province Higher Educational Science and Technology Program(J14LA17);China Postdoctoral Science Foundation(2015M57073);Qingdao Postdoctoral Application Research Project(2015116)

Crystal Growth and Terahertz Generation of Organic DAST Crystal with Large (001) Surface Area

YOU Fei;SUN Qing;WANG Tianhua;CAO Lifeng;ZHONG Degao;TENG Bing

Online:2020-03-15 Published:2021-01-20

摘要/Abstract

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;.

关键词: DAST晶体;大尺寸(001)晶面;太赫兹脉冲

Abstract: The growth of DAST (4-N,N-dimethylamino-4,-N,-methylstilbazolium tosylate) crystal with large (001) surface area is challenging but necessary for intense broadband Terahertz (THz) sources.Here,the effect of the growth solution concentration on the crystal shape were studied by slope nucleation method-coupled slow cooling(SNM-SC) technique.With careful control over the growth conditions,DAST crystals 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;.

Key words: The growth of DAST (4-N,N-dimethylamino-4,-N,-methylstilbazolium tosylate) crystal with large (001) surface area is challenging but necessary for intense broadband Terahertz (THz) sources.Here,the effect of the growth solution concentration on the crystal shape were studied by slope nucleation method-coupled slow cooling(SNM-SC) technique.With careful control over the growth conditions,DAST crystals 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;.

中图分类号:

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): 402-406.

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): 402-406.

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