Third order nonlinear optical properties of ethyltriphenylphosphonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)aurate (III) |
| |
Authors: | Jingwei Chen Quan Ren Xinqiang Wang Tingbin Li Hongliang Yang Jingnan Zhang Guochao Li |
| |
Affiliation: | 1. Department of Optics, Shandong University, Jinan 250100, Shandong Province, China;2. State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, Shandong Province, China;3. Department of Material Science and Technology, Taishan University, Tai’an 271021, Shandong Province, China |
| |
Abstract: | A novel organometallic compound, ethyltriphenylphosphonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)aurate (III), abbreviated as TPEPADT, was synthesized. The TPEPADT doped poly(methyl methacrylate) (PMMA) thin film with a mass fraction of 1% (1 wt.%) was prepared by using a spin-coating method. The third-order nonlinear optical properties of TPEPADT in acetonitrile solution and TPEPADT-doped PMMA thin film were investigated by using the laser Z-scan technique at the wavelength 1064 nm with laser duration of 20 ps. The linear refractive index of the polymer thin film was also studied. The Z-scan curves revealed that both TPEPADT in acetonitrile solution and the polymer thin film possessed negative nonlinear refraction, exhibiting a self-defocusing effect and nonlinear absorption was negligible under the experimental conditions used. The nonlinear refractive index was calculated to be ?1.9 × 10?18 m2/W for TPEPADT in acetonitrile solution and ?8.9 × 10?15 m2/W for the polymer thin film. These results suggest that TPEPADT have potential for the application of all-optical switching devices. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|