The nonlinear refraction of tetrasodium salt of copper tetrasulfophthalocyanine in water was investigated by using Z-scan technique at 532 nm with different input energy and different pulse width. We reported the comp...The nonlinear refraction of tetrasodium salt of copper tetrasulfophthalocyanine in water was investigated by using Z-scan technique at 532 nm with different input energy and different pulse width. We reported the competition between the excited-state refraction and excited-state-thermal-induced refraction. The sign change of nonlinear refraction induced by thermal effect was observed and analyzed. In addition, we found that the excited-state refraction cannot counteract with excited-state-thermal-induced refraction due to different physical mechanism.展开更多
基金This work is supported by the National Natural Sci- ence Foundation of China （Nos. 21203058, 51002046, 61275117 and 61307054）, the Natural Science Founda- tion of Heilongjiang Province of China （No. B201308）, the Foundation of Educational Commission of Hei- longjiang Province of China （Nos. 12521399 and 12531579）, the Natural Science Foundation for the Re- turned Overseas Scholars of Heilongjiang Province （No. LC2012C02）, and the Innovative Talents Program of Heilongjiang University of Science and Technology （No. Q20130202）.
文摘The nonlinear refraction of tetrasodium salt of copper tetrasulfophthalocyanine in water was investigated by using Z-scan technique at 532 nm with different input energy and different pulse width. We reported the competition between the excited-state refraction and excited-state-thermal-induced refraction. The sign change of nonlinear refraction induced by thermal effect was observed and analyzed. In addition, we found that the excited-state refraction cannot counteract with excited-state-thermal-induced refraction due to different physical mechanism.
