Nanoscale metal oxide particles produced in the plasma discharge in the liquid phase upon exposure to ultrasonic cavitation. 3. Optical nonlinearities of particle suspensions

Abstract

The nonlinear response of metal oxide nanoparticles obtained by the acoustic plasma method is measured in aqueous disperse systems at a wavelength of 532 nm. Induced absorption is detected in the Cu₂O, WO₃, and ZnO disperse systems, and bleaching is detected in the Fe₂O₃ system. The real and imaginary parts of nonlinear third-order susceptibilities are determined.