An organic material, 4,5-bis(benzoylthio)-1,3-dithiole-2-thione (BBDT), was synthesized. The thin film of BBDT doped
into poly(methyl methacrylate) (PMMA) was prepared using spin-coating method. Its linear optical properties were
characterized with prism coupler (SPA-4000, Korea). The third-order nonlinear optical (NLO) properties were
investigated using Z-scan technique with pulses of picoseconds at 532 nm. The Z-scan spectra reveal a strong nonlinear
absorption (reverse saturable absorption) and a positive nonlinear refraction. The nonlinear absorption coefficient is
calculated to be 1.302×10-9m/W. The nonlinear refractive index is 2.243×10-9esu. The results show that the film exhibits
a great nonlinear optical response.
We investigate the relationship between the hybrid form of center metal-atom and the third order nonlinear optical
property in a class of 1,3-dithiole-2-thione-4,5-dithiolato-S, S' bis-chelate transition metal complexes for the first time by
z-scan. We find that in bis-chelate complexes when the center metal-atom takes the sp3 hybrid form which construct a
tetrahedron construction have better third order nonlinear refraction property than in the form of dsp2 hybrid which
construct a plane construction and for nonlinear absorption property the case is quite contrary. Cation group have
shielding effect on both nonlinear refraction and nonlinear absorption property for this kind of materials.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.