TITLE:
Study on the Third-order Nonlinear Optical Properties of bis(tetraethylammonium) bis(1,3-dithiole-2-thione-4,5-dithiolato)cadium
AUTHORS:
Hongliang Yang, Fujun Zhang, Xinqiang Wang, Guanghui Zhang
KEYWORDS:
Optical Nonlinearity; Kerr Gate Technology; Response Time
JOURNAL NAME:
Optics and Photonics Journal,
Vol.3 No.2B,
July
18,
2013
ABSTRACT: 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.