The nonlinear optical properties of an organo-metallic compound, tetrabutylammonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)aurum, abbreviated as BuAu, are investigated by Z-scan technique with 28 ps pulse width at 532 nm. Strong reverse saturable absorption has been found, the effective excited-state absorption cross section is obtained as σ_eff = 1.818×10^-17 cm². The material also shows self-defocus and the nonlinear optical refractive index is measured as n₂ = -1.341×10^-12 esu with the concentration of 2×10^-3 mol/L. All the results suggest that this material has potential application as optical devices.

Date Published: 4 January 2008
PDF: 6 pages
Proc. SPIE 6839, Nonlinear Optics: Technologies and Applications, 68390I (4 January 2008); doi: 10.1117/12.754963

Published in SPIE Proceedings Vol. 6839:
Nonlinear Optics: Technologies and Applications
Yiping Cui; Qihuang Gong; Yuen-Ron Shen, Editor(s)