Enhanced Excited-State Optical Nonlinearities in a Novel Metallophthalocyanine Compound (C_(12)H_(25)O)_(8) PcPb  

作　　者：QU Shi-Liang CHEN Yu SONG Ying-Lin WANG Yu-Xiao ZHAO Xiu-Li LIU Shu-Tian WANG Duo-Yuan 曲士良;陈煜;宋瑛林;王玉晓;赵秀丽;刘树田;王夺元(Department of Physics,Harbin Institute of Technology,Harbin 150001;Center for Molecular Science,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080)

机构地区：[1]Department of Physics,Harbin Institute of Technology,Harbin 150001 [2]Center for Molecular Science,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080

出　　处：《Chinese Physics Letters》2001年第11期1476-1478,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.292682001 and 29832030。

摘　　要：Nonlinear absorption in a novel metallophthalocynine compound (C_(12)H_(25)O)_(8)PcPb was investigated by the Zscan technique with the irradiation of 8ns laser pulses at the wavelength of 532nm. The large optical limiting response was observed. The nonlinear absorption cross section was obtained by the simulation with a simplified rate equation model in which excited triplet-triplet state absorption is dominant. The excited-state absorption cross section and its effective ratio to the ground-state absorption cross section are larger than those of C_(60). The attenuation factor for (C_(12)H_(25)O)_(8)PcPb is 2.5 times larger than that of C_(60), which is induced by the heavy atom lead interposition.

关 键 词：NONLINEAR ABSORPTION EXCITED 

分 类 号：TN2[电子电信—物理电子学]