Magnesium- and zinc-aluminosilicate cobalt-doped glass ceramics as saturable absorbers for diode-pumped 1.3-microm laser.
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.
Volk
Yuri V
YV
International Laser Center, Minsk, Belarus. yvolk@ilc.by
Denisov
Igor A
IA
Malyarevich
Alexander M
AM
Yumashev
Konstantin V
KV
Dymshits
Olga S
OS
Shashkin
Alexander V
AV
Zhilin
Alexander A
AA
Kang
Uk
U
Lee
Kyeong-Hee
KH