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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
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~~
关键词
金属卟啉化合物
激发态折射
瞬态热折射
metallic porphyrin compound, excited-state refraction,transient thermal refraction