Two-photon absorption in ZnO/ZnS and ZnO/ZnS/Ag core-shell quantum dots,LIU Shuyu,ZHONG Mianzeng,We report on large two-photon absorption (TPA) in ZnO/ZnS and ZnO/ZnS/Ag core/shell quantum dots (QDs), determined by both Z-scan and pump-probe techniques with femtosecond laser p
A spatial distribution of diffuse reflectance produced by obliquely incident light is not centered about the point of light entry. The value of shift in the center of diffuse reflectance is directly related to the absorption coefficient \mu_{a} and the effective attenuation coefficient \mu_{eff}. \m