Study on the mechanism of the depositon process of KTN thin film by pulsedlaser

According to energy balance consideration, the ablation ratio,formula of ta rget irradiated by pulsed laser is derived, and the spatial-characteristic equations of plasma generated by pulsed laser are obtained by using fluid d ynamic theory. Combining the ablation ratio formula with the spatial-charac teristic equations of plasma, the effects of different laser power density and wavelength on the deposition characteristics of Kta(0.65) Nb-0.35 O-3 ( KTN) thin film are studied on the basis of our experiments. And many valuab le results are obtained which have been discussed in detail. The calculated results are in agreement with experiments on the whole.