Ultrafast dynamics and third-order nonlinearity of thin films of tert-butyl peripherally-substituted indium phthalocyanine axlally grafted polystyrene （tBu4PcIn-PS） are investigated by femtosecond optical-Kerr-effe...Ultrafast dynamics and third-order nonlinearity of thin films of tert-butyl peripherally-substituted indium phthalocyanine axlally grafted polystyrene （tBu4PcIn-PS） are investigated by femtosecond optical-Kerr-effect （OKE） and z-scan experiments. The fastest component （〈 200 fs） in the OKE traces of the film is related to the electron cloud distortion, where the phthalocyanine-polymer interaction may enhance this contribution. The z-scan measurement also indicates that this interaction might enhance the third-order optical nonlinearity. The measurements shows that the magnitudes of X（3） of these films are in order of 10^-11 esu.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 10274013, 10374020, and 20546002, the East China University of Science and Technology/Ireland Science and Technology Collaboration Research Foundation （No CI-2004-06）, SRF for R0CS, and STCSM （No 05XD14004）.
文摘Ultrafast dynamics and third-order nonlinearity of thin films of tert-butyl peripherally-substituted indium phthalocyanine axlally grafted polystyrene （tBu4PcIn-PS） are investigated by femtosecond optical-Kerr-effect （OKE） and z-scan experiments. The fastest component （〈 200 fs） in the OKE traces of the film is related to the electron cloud distortion, where the phthalocyanine-polymer interaction may enhance this contribution. The z-scan measurement also indicates that this interaction might enhance the third-order optical nonlinearity. The measurements shows that the magnitudes of X（3） of these films are in order of 10^-11 esu.
