Linear and nonlinear refractive index modifications in pHEMA-oxo-TiO2 hybrids studied via cw-UV laser excitation and self-action of picosecond laser pulses

Abstract

Linear and nonlinear optical properties of pHEMA-oxo-TiO2 nanohybrids were studied. The reduction of refractive index with the increase of UV irradiation dose was observed. The TiO2 nanoparticles concentration strongly affects the nonlinear optical response of the composite system.