Manjunatha, K.B.Rajarao, R.Umesh, G.Ramachandra, Bhat, B.Poornesh, P.2020-03-312020-03-312017Laser Physics, 2017, Vol.27, 8, pp.-10.1088/1555-6611/aa7370https://idr.nitk.ac.in/handle/123456789/9835A salen-based ruthenium (Ru) (II) complex was synthesized for possible use in nonlinear optical device applications. The Ru complex was doped in a polymer matrix to fabricate films using a low-cost spin-coating technique. The third-order nonlinear optical parameters of the complex were investigated by Z-scan and degenerate four-wave mixing techniques. The study reveals two-order enhancement of third-order optical susceptibility ? (3) and exhibits superior limiting capability due to a reverse saturable absorption process. All-optical switching action for the films indicates that the sample can function as an optical inverter or a NOT gate. Hence, the Ru (II) Schiff-base complex materializes as a possible candidate for use in nonlinear optical devices. 2017 Astro Ltd.Article