摘要
A self-organized thin film of a cyanine dye is fabricated by the spin-coating technique and is characterized by ultraviolet-visible spectroscopy, infrared （IR） spectroscopy, small-angle X-ray diffraction, eUipsometer, and atomic force microscopy （AFM）. The nonlinear optical properties of the thin films are investigated by degenerate four wave mixing （DFWM） technique. The cyanine dye thin film sample exhibits high optical nonlinearities （χ^（3） = 2.55 × 10^-12 esu）, and the mechanism is analyzed by the exciton coupling theory.
A self-organized thin film of a cyanine dye is fabricated by the spin-coating technique and is characterized by ultraviolet-visible spectroscopy, infrared （IR） spectroscopy, small-angle X-ray diffraction, eUipsometer, and atomic force microscopy （AFM）. The nonlinear optical properties of the thin films are investigated by degenerate four wave mixing （DFWM） technique. The cyanine dye thin film sample exhibits high optical nonlinearities （χ^（3） = 2.55 × 10^-12 esu）, and the mechanism is analyzed by the exciton coupling theory.
基金
This work was supported by the National Natural Science Foundation of China(No.10574046)
the National Key Project for Basic Research of China(No.2006CB806006 and 2006CB921105)
the Program for Changjiang Scholars and Innovative Research Team in University(PCSIRT)
the Program for New Century Excellent Talents in University(NCET-04-0420)
the Doctoral Program of High Education(No.20050269011)
the Phosphor Program sponsored by Shanghai Science Technology Committee(No. 06QH14003)
the Twilight Project sponsored by Shanghai Education Committee(No.03SG23).
