Fig. 1. (a) Schematic illustration of the LITT measurements on the graphite/BSCO/LAO multilayer structure; (b) schematic crystal structure of BSCO; (c) SEM surface image of the graphite layer coated on the c-axis-tilted BSCO thin film.

Fig. 2. (a) Light-induced thermal voltage signals from bare and graphite-coated BSCO films upon the illumination of 980 nm cw lasers with a power of 50 mW; (b) voltage amplitude Vp as a function of the graphite layer thickness.

Fig. 3. Surface temperature of the c-axis-tilted BSCO films coated with different graphite thickness under the illumination of 980 nm laser with the same power density as in Fig. 2.

Fig. 4. (a) Diagrammatic sketch and boundary conditions for simulation; (b) under the irradiation of a Gaussian-shaped laser, simulated surface temperature distribution along r-axis with different thickness in graphite layer. Inset, calculated average temperature of the illuminated region.