Manjunatha, K B and Rajarao, Ravindra and Umesh, G and Bhat, Ramachandra B (2017) All-optical switching and limiting properties of a Ru (II) Schiff-base complex for nonlinear optical applications. Laser Physics, 27 (8). pp. 85401-85406. ISSN 1054-660X

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Abstract

A 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 χ(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.

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