Stenzel, O.O.StenzelWilbrandt, S.S.WilbrandtMühlig, C.C.MühligSchröder, S.S.Schröder2022-03-062022-03-062020https://publica.fraunhofer.de/handle/publica/26137010.3390/coatings10010059Titanium dioxide films were prepared by plasma ion-assisted electron beam evaporation. Linear optical properties were investigated in terms of spectrophotometry using the beta-distributed oscillator (ß_do) model as a parametrized dispersion law. The nonlinear two-photon absorption coefficient of titanium dioxide was determined by means of the laser-induced deflection technique at a wavelength of 800 nm. The obtained values of (2-5) × 10−11 cm/W were consistent with published experimental values for rutile as well as for simulations performed in the frames of the ß_do and Sheik-Bahae models.enabsorption measurementlaser-induced deflectionnonlinear refractionoptical coatingoptical constants620journal article