Abstract

We present the optical Kerr effect, and nonlinear optical absorption studies of two closely spaced distributions of silver nanoparticles embedded in silica containing ion-implanted silicon nanocrystals. The z-scan technique was used to explore the third-order optical nonlinear response at 830 nm with 80 fs pulses. Two-wave mixing experiments were comparatively examined by a vectorial method at 532 nm wavelength using nanosecond pulses. The femtosecond results reveal that both saturated and two-photon absorption seem to contribute to the nonlinear absorption observed. From nanosecond observations, we identify that a remarkable enhancement in the third-order optical nonlinearity is achieved by the double-implantation process.

© 2015 Optical Society of America

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