title: Magnesium- and zinc-aluminosilicate cobalt-doped glass ceramics as saturable absorbers for diode-pumped 1.3-microm laser.
abstract: Q switching of a diode-pumped Nd3+:KGd(WO4)2 laser at 1.35 microm by use of cobalt-doped magnesium- and zinc-aluminosilicate glass ceramics as saturable absorbers is demonstrated. Q-switching efficiency up to 40% has been obtained. Ground-state absorption cross sections for Co2+ ions at the wavelengths of 1.35 and 1.54 microm are estimated to be (3.5-4.0) x 10(-19) cm2. Bleaching relaxation times under the excitation of the 4A2 --> 4T1(4F) transition of tetrahedrally coordinated Co2+ ions are of 280 +/- 50 ns and 700 +/- 80 ns for magnesium- and zinc-aluminosilicate glass ceramics, respectively.
authors.affiliation: International Laser Center, Minsk, Belarus. yvolk@ilc.by
authors.forename: Yuri V
authors.initials: YV
authors.lastname: Volk
authors.forename: Igor A
authors.initials: IA
authors.lastname: Denisov
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