金属卟啉化合物激发态折射与激发态吸收增强瞬态热折射竞争研究  

Competition between the excited-state refraction and excited-state absorption induced transient thermal refraction of metallic porphyrin compound

作　　者：陈玉明[1] 王玉晓[1] 蒋礼[2] 张学如[1] 杨俊义[3] 李玉良[2] 宋瑛林[1] 

机构地区：[1]哈尔滨工业大学应用物理系,哈尔滨150001 [2]中国科学院化学研究所有机固体重点实验室,北京国家分子科学实验室,北京100190 [3]苏州大学物理科学与技术学院,苏州215006

出　　处：《物理学报》2009年第2期995-1001,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10774109);国家教育部新世纪优秀人才支持计划(批准号:NCET-04-0333);黑龙江省杰出青年科学基金(批准号:JC-04-04)资助的课题~~

摘　　要：应用激发态吸收增强瞬态热折射理论结合激发态折射理论研究了新型锌卟啉化合物Zn-porphyrin中激发态吸收增强瞬态热折射与激发态折射间的相互竞争.样品在不同脉宽激光激发下呈现自聚焦-自散焦间的转化.当入射激光脉宽为4ns时,激发态折射占主要地位,样品呈现自聚焦性质;当入射激光脉宽为8ns时,激发态吸收增强瞬态热折射占主要地位,激发态折射占次要地位,样品呈现自散焦性质.The competition between the excited-state absorption induced transient thermal refraction and the excited-state refraction of a novel metallic porphyrin compound Zn-porphyrin was studied by the excited-state absorption induced transient thermal refraction theory combined with the excited-state refraction theory. The transformation between self-focusing and self-defocusing of the sample for different pulse widths was observed. The sample exhibited self-focusing effect attributed mainly to excited-state refraction for 4 ns laser pulse, while in the self-defocusing effect for 8 ns laser pulse the excited-state absorption induced transient thermal refraction dominates the excited-state refraction.

关 键 词：金属卟啉化合物 激发态折射 瞬态热折射 

分 类 号：TN241[电子电信—物理电子学]