title: [The upconversion "characteristic saturation phenomenon" of ErYb:ZBLAN glass excited by 966 nm diode laser].
abstract: This paper researches the upconversion luminescence of Er:ZBLAN and ErYb:ZBLAN glasses excited by 966 nm diode laser. It is found that there is a new kind of "characteristic saturation phenomenon". It is that the log-log plot's slope of upconversion luminescence intensity upon laser power of ErYb:ZBLAN glass is decreased clearly than that of Er:ZBLAN, and both of their log-log plots are rather good straight line. This upconversion mechanism is a new kind of "diffusion-transfer" mechanism, that is energy diffusion among Yb3+ ions sequential followed by energy transfer between Er(3+)-Yb3+ ions. The "characteristic saturation phenomenon" is just resulted from energy diffusion.
authors.affiliation: Analytical and Testing Center, Beijing Normal University, 100875 Beijing.
authors.forename: X
authors.initials: X
authors.lastname: Chen
authors.forename: M
authors.initials: M
authors.lastname: Li
authors.forename: Z
authors.initials: Z
authors.lastname: Hao
authors.forename: G
authors.initials: G
authors.lastname: Meng
authors.forename: Z
authors.initials: Z
authors.lastname: Song