title: Dependence of infrared-to-ultraviolet emission enhancement on Yb3+, Er3+:CaF2 nanoparticle dimension.
abstract: In the nanocomplexes with Yb3+, Er(3+)-codoped calcium fluoride (CaF2:Yb3+, Er3+) nanoparticles, the infrared (IR)-to-ultraviolet (UV) upconversion (UC) properties were explored under 980 nm laser diode (LD) excitation. The strong enhancement of UV emission at 407 nm was observed. An UP mechanism of the materials was discussed.
authors.affiliation: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, PR China.
authors.forename: Jisen
authors.initials: J
authors.lastname: Zhang
authors.forename: Liguo
authors.initials: L
authors.lastname: Zhang
authors.forename: Shaozhe
authors.initials: S
authors.lastname: Lv
authors.forename: Weiping
authors.initials: W
authors.lastname: Qin