Microscopy

Titanium dioxide films have been prepared by plasma-ion assisted electron beam evaporation. Linear optical properties have been investigated in terms of spectrophotometry while using the beta-distributed oscillator (ß_do) model as a parametrized dispersion law. The nonlinear two-photon absorption coefficient of titanium dioxide has been determined by means of the laser induced deflection technique at a wavelength of 800 nm. The obtained values of (2-5)x10-11 cm/W are consistent with published experimental values for rutile as well as simulations performed in the frames of the ß_do and Sheik-Bahae models.