Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (03): 717-721.doi: 10.3866/PKU.WHXB20110340

• PHOTOCHEMISTRY AND RADIATION CHEMISTRY • Previous Articles     Next Articles

Third Order Nonlinear Optical Properties of Benzyltriethylamine Bis(2-thioxo-1,3-dithiole-4,5-dithiolato) Aurate(III)

CHEN Jing-Wei1, WANG Xin-Qiang2, REN Quan1, LI Ting-Bin3, YANG Hong-Liang1, ZHANG Jing-Nan1, LI Guo-Chao1   

  1. 1. Department of Optics, Shandong University, Jinan 250100, P. R. China;
    2. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China;
    3. Department of Material Science and Technology, Taishan University, Tai′an 271021, Shandong Province, P. R. China
  • Received:2010-10-29 Revised:2011-01-06 Published:2011-03-03
  • Contact: REN Quan
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (60778037, 50772059, 11004123), Foundation for the Author of National Excellent Doctoral Dissertation of China (200539), and Science Foundation of Shandong Province, China (ZR2009GQ007).


We prepared a new crystalline nonlinear optical coordination compound, benzyltriethylamine bis (2-thioxo-1,3-dithiole-4,5-dithiolato) aurate(III) (BTEAADT). A BTEAADT-doped poly(methyl methacrylate) (PMMA) thin film with a mass fraction of 1% was prepared by spin-coating. The third-order nonlinear optical properties of BTEAADT in acetonitrile and a BTEAADT-doped PMMA film were investigated using the laser Z-scan technique with 20 ps pulses at 1064 nm. The linear optical properties of the polymer thin film were also studied. The Z-scan spectra revealed that the polymer thin film sample possessed negative nonlinear refraction and exhibited a similar self-defocusing effect to that found for the solution. In addition, nonlinear absorption was negligible for both systems under the experimental conditions used. The nonlinear refractive index was calculated to be -1.459×10-18 m2·W-1 for the solution sample and -3.978×10-15 m2·W-1 for the film. These results suggest that this material is a promising candidate for application in nonlinear optical devices such as all-optical switching manufacture at 1064 nm.

Key words: Nonlinear optical property, Z-scan, Thin film