title: High efficient 1.56 microm laser operation of Czochralski grown Er:Yb:Sr3Y2(BO3)4 crystal.
abstract: An Er:Yb:Sr(3)Y(2)(BO(3))(4) crystal doped with 0.9 at.% Er(3+) and 18.6 at.% Yb(3+) ions was grown by the Czochralski method. End-pumped by diode laser at 970 nm in a hemispherical cavity, 1.3 W quasi-cw laser output around 1.56 microm was achieved in a 1.1-mm-thick Z-cut Er:Yb:Sr(3)Y(2)(BO(3))(4) crystal when the transmission of output coupler is 1.5%. The absorbed pump threshold and slop efficiency of the laser are 4.26 W and 20%, respectively. This crystal has flat and broad gain curve peaked around 1.56 microm, which shows that it is also a potential gain medium for tunable and short pulse lasers.
authors.affiliation: Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, China.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Huang
authors.forename: Yujin
authors.initials: Y
authors.lastname: Chen
authors.forename: Yanfu
authors.initials: Y
authors.lastname: Lin
authors.forename: Xinghong
authors.initials: X
authors.lastname: Gong
authors.forename: Zundu
authors.initials: Z
authors.lastname: Luo
authors.forename: Yidong
authors.initials: Y
authors.lastname: Huang