Ultrafast Third-Order Nonlinear Optical Response of Organic-Inorganic Hybrid Materials (C19H25N2)7Hn[P2Mo18-nVnO62]
XIANG Hong1, GAO Li-Hua2, WANG Ke-Zhi3, WANG Zhen-Wei1, LI Zhi1, HUANG Wen-Tao1, YANG Hong1, GONG Qi-Huang1
1State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871
2School of Chemical and Environmental Engineering, Beijing Technology and Business University, Beijing 100037
3Department of Chemistry, Beijing Normal University, Beijing 100875
Ultrafast Third-Order Nonlinear Optical Response of Organic-Inorganic Hybrid Materials (C19H25N2)7Hn[P2Mo18-nVnO62]
1State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871
2School of Chemical and Environmental Engineering, Beijing Technology and Business University, Beijing 100037
3Department of Chemistry, Beijing Normal University, Beijing 100875
Abstract： We have measured the third-order optical nonlinearity of the organic-inorganic hybrid materials of supermolecules (C19H25N2)7Hn[P2Mo18-nVnO62] (n =1, 2, 4, 5) and their reactants (C19H25N2)Br and Hn+6[P2Mo18-nVnO62] by using the ultrafast optical Kerr effect at 830 nm wavelength, with time resolution of 115 fs. By comparing the γ values of the supermolecules and their reactants, it is concluded that the charge-transfer enhanced remarkably the third-order optical nonlinearity of the compounds. With the increment of the number of the vanadium atoms, the electron distribution changed strongly and the γ value decreased dramatically.
2003, Vol. 20 
