title: Passive Q-switching of an Er, Yb:glass laser with Co:Mg(Al,Ga)2O4-based glass-ceramics.
abstract: Transparent glass-ceramics (GCs) containing Co:Mg(Al,Ga)2O4nanocrystals (mean diameter of 7-9 nm) are synthesized by heat treatments at 850-950°C from magnesium aluminosilicate glass nucleated by TiO2and doped with Ga2O3and CoO. The GCs exhibit a broadband A24(F4)→T14(F4) absorption due to the Co2+ions, low saturation fluence (∼0.5  J/cm2), fast recovery time of initial absorption (∼300  ns), and high laser damage threshold (∼20  J/cm2). They are used for passive Q-switching of a diode side-pumped Er,Yb:glass laser generating 3.1 mJ/20 ns pulses (peak power, 155 kW) at 1535 nm with a TEM00output mode. The Q-switching performance of the Co:Mg(Al,Ga)2O4-based GCs is compared with that for various Co2+-doped GCs and Co:MgAl2O4single crystal. The prepared GCs are promising for further applications in passively Q-switched Er:YAG and other Er crystalline (or ceramic) lasers.
authors.forename: V
authors.initials: V
authors.lastname: Vitkin
authors.forename: P
authors.initials: P
authors.lastname: Loiko
authors.forename: O
authors.initials: O
authors.lastname: Dymshits
authors.forename: A
authors.initials: A
authors.lastname: Zhilin
authors.forename: I
authors.initials: I
authors.lastname: Alekseeva
authors.forename: D
authors.initials: D
authors.lastname: Sabitova
authors.forename: A
authors.initials: A
authors.lastname: Polishchuk
authors.forename: A
authors.initials: A
authors.lastname: Malyarevich
authors.forename: X
authors.initials: X
authors.lastname: Mateos
authors.forename: K
authors.initials: K
authors.lastname: Yumashev