Large Nonlinear Refractive Indices of Nickel Dithiolene Doped Polymethylmethacrylate

The nonlinear refractive index, linear and nonlinear absorption coefficients of a number of nickel dithiolene-doped PMMA polymers have been measured. Nonlinear refractive indices up to about 10 −8 cm −2 /KW were observed, with figures of merit defined by δn sat /αλ and Reχ (3) / Im χ (3) within acceptable device limits.