摘要
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.
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.
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）.
