synthesis of tio2-zno-zro2 nanocomposites for nonlinear optics applications

A sol-gel technique under ultrasonic irradiation was applied to synthesize zro2/tio2/zno nanocomposites. x-ray diffraction analysis confirmed the successful synthesis of nanocomposites. the strain and crystalline size values of zro2/tio2/zno nanocomposites are estimated to be 9.98 × 10-4 and 17.66 nm, respectively. the linear absorption coefficient of zro2/tio2/zno nanocomposites was measured 2.48 cm-1 by placing the sample at the focal point of the laser beam, varying the incident power, and recording the output power. the measurements of nonlinear optical absorption of zro2/tio2/zno nanocomposites have been performed using a continuous-wave nd: yag laser operating at 532 nm by the open aperture z-scan technique. the nonlinear absorption coefficient, β of zro2/tio2/zno nanocomposites was obtained of the order of 10-5 cm∕w. the results suggest that zro2/tio2/zno nanocomposites with a strong nonlinear optical absorption response can be a very promising nonlinear medium that can open a new avenue to the semiconductor-based nonlinear optics.