有机非线性光学晶体DAST籽晶表面研究  

Study on the Surface of DAST Seed of the Organic Nonlinear Optical Crystal

作　　者：武聪[1] 孟大磊[1] 庞子博[1] 徐永宽[1] 程红娟[1] 

机构地区：[1]中国电子科技集团公司第四十六研究所,天津300220

出　　处：《压电与声光》2016年第2期278-280,共3页Piezoelectrics & Acoustooptics

基　　金：国家重点研究项目

摘　　要：采用籽晶法可获得大尺寸、高质量的4-N,N-二甲胺基-4’-N’-甲基-氮杂芪的对甲苯磺酸盐(DAST)晶体,而DAST籽晶的表面质量直接影响晶体质量。采用自制DAST源粉,通过溶液降温法自发成核生长DAST籽晶,并对其表面进行了研究。采用红外光谱对DAST源粉进行测试发现,DAST晶体有一定的吸水性。微分干涉显微镜及原子力显微镜(AFM)检测DAST籽晶表面形貌,结果表明,DAST籽晶表面存在凹坑、生长台阶等缺陷。The large and high quality DAST crystal can be obtained by using the seed crystal method,while the DAST seed crystal surface quality directly affect the quality crystal.Using self-made DAST source powder,DAST seed crystal was grown by the solution cooling method,and the crystal surface was investigated.DAST source powder was tested by the infrared spectrum,and it was found that DAST crystal had the water absorptivity.The surface morphology of DAST seed crystal was detected by the differential interference fiber lens and atomic force microscope,the surface defects such as pits and growth steps existed in the DAST seed surface.

关 键 词：DAST 籽晶 表面 源粉 缺陷 

分 类 号：TN304[电子电信—物理电子学]