title: Influence of reducing-oxidizing conditions on the optical properties of Co(2+)-doped magnesium aluminosilicate glass ceramics and their use as an effective saturable absorber Q switch.
abstract: Nonlinear optical properties of Co(2+)-doped magnesium aluminosilicate glass ceramics prepared under normal and reducing conditions are studied in the range of the 4A2 --> 4T1(4F) transition of tetrahedral Co2+ ions. The results of passive Q switching of a 1.54-microm Er3+:glass laser with saturable absorbers made of Co(2+)-doped glass ceramics prepared at different conditions are presented. Q-switched pulses of 60 ns in duration and of 4.6 mJ in energy, corresponding to approximately 20% of the Q-switching conversion efficiency, are achieved.
authors.affiliation: International Laser Center, Building 17, 65 F. Skaryna Avenue, 220013 Minsk, Belarus. yvolk@ilc.by
authors.forename: Yuri V
authors.initials: YV
authors.lastname: Volk
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Malyarevich
authors.forename: Konstantin V
authors.initials: KV
authors.lastname: Yumashev
authors.forename: Olga S
authors.initials: OS
authors.lastname: Dymshits
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Shashkin
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Zhilin
authors.forename: Uk
authors.initials: U
authors.lastname: Kang
authors.forename: Kyeong-Hee
authors.initials: KH
authors.lastname: Lee