Acta Optica Sinica, Volume. 31, Issue 1, 131004(2011)
Study on the Preparation and Properties of the Nonlinear Optical Polymer Containing Tricyanofuran Units
A novel nonlinear optical polymer (P1) containing tricyanofuran units is synthesized by Friedel-Crafts reaction. The polymeric films are then fabricated by means of the spin-coating method, and the alignment of the chromophores of the polymeric film is carried out by corona poling method. The poling behaviors of the films are studied by UV-visible absorption spectra and atomic-force microscopy (AFM). From the absorbance change, the order parameter (Φ=0.20) of the poled film can be estimated. The second-order nonlinear optical properties of the polymer are measured by the second harmonic generation (SHG), and the obtained value of the second harmonic coefficient d33=9.4 pm/V. The sample is stored at room temperature for 2 d, and the value of d33 is remained at 70% of the initial value. The experimental results show that compared with the host-guest adulterant polymer, P1 possesses competitive optical nonlinear stability.
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Han Likun, Jiang Yadong, Li Yuanxun. Study on the Preparation and Properties of the Nonlinear Optical Polymer Containing Tricyanofuran Units[J]. Acta Optica Sinica, 2011, 31(1): 131004
Category: Thin Films
Received: Mar. 22, 2010
Accepted: --
Published Online: Dec. 31, 2010
The Author Email: Likun Han (hanlikun@uestc.edu.cn)