本文对倾斜基片上生长的ＹＢａＣｕＯ薄膜在不同膜厚和多种浓度Ｐｒ掺杂条件下的激光响应进行了研究．这种现象的根源是薄膜层状结构造成的热电系数张量各向异性．与未掺杂ＹＢａＣｕＯ薄膜的激光响应相比，掺Ｐｒ使薄膜的激光响应幅度显著提高，并且仍具有较好的能量线性响应和时间响应．掺Ｐｒ２０％，效应最明显；掺Ｐｒ５０％时，效应则显著降低．本文认为，由于Ｐｒ掺杂使ＣｕＯ面载流子浓度降低从而显著增强声子曳引作用是导致ＹＢａＣｕＯ薄膜ＣｕＯ面热电系数增大及其激光响应幅度提高的主要原因 The laser response of YBaCuO thin films grown on sloping substrates at different film thicknesses and Pr concentrations was studied in this paper. The root cause of this phenomenon is the thermoelectric coefficient tensor anisotropy caused by the lamellar structure of the film. Compared with the laser response of undoped YBaCuO thin films, the laser response amplitude of the thin films was significantly increased with Pr, and still had better energy linear response and time response. Addition of Pr20%, the effect of the most obvious; mixed with Pr50%, the effect was significantly reduced. This paper argues that due to Pr doping Cu  O surface carrier concentration decreased significantly enhance the phonon drag effect is Y  BaCu  O film Cu  O surface thermoelectric coefficient increases and its laser response amplitude increased main reason