Study on the Third-order Nonlinear Optical Properties of bis(tetraethylammonium) bis(1,3-dithiole-2-thione-4,5-dithiolato)cadium

• 作者: Fujun Zhang Guanghui Zhang Hongliang Yang Xinqiang Wang
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 医学
• 关键词: Optical NONLINEARITY KERR Gate Technology Response Time
• 年，卷（期）: 2013,（2）
• 页码范围: 25-28
• 页数: 4页
• 分类号: R73

摘要

A dmit2- salt: bis(tetraethylammonium)bis(1,3-dithiole-2-thione-4,5-dithiolato)cadium (CADMIT) was synthesized. The Optical Kerr Effect (OKE) signal of its acetonitrile solution was measured by femtosecond optical Kerr gate technique. Using CS2 OKE signal as reference signal measured under identical conditions, the third-order optical nonlinear susceptibility, c(3), of the sample solution was obtained to be about 2.98 x 10-14 esu at the concentration of 1.57 x 10-3 M. The second-order hyperpolarizability of its molecular was estimated to be as large as 1.23 x 10-32 esu. Its response time was about 195 fs, which is believed to be the contribution from the delocalized electrons.