Magnesium- and zinc-aluminosilicate cobalt-doped glass ceramics as saturable absorbers for diode-pumped 1.3-microm laser

Yuri V Volk; Igor A Denisov; Alexander M Malyarevich; Konstantin V Yumashev; Olga S Dymshits; Alexander V Shashkin; Alexander A Zhilin; Uk Kang; Kyeong-Hee Lee

doi:10.1364/ao.43.000682

Magnesium- and zinc-aluminosilicate cobalt-doped glass ceramics as saturable absorbers for diode-pumped 1.3-microm laser

Appl Opt. 2004 Jan 20;43(3):682-7. doi: 10.1364/ao.43.000682.

Authors

Yuri V Volk¹, Igor A Denisov, Alexander M Malyarevich, Konstantin V Yumashev, Olga S Dymshits, Alexander V Shashkin, Alexander A Zhilin, Uk Kang, Kyeong-Hee Lee

Affiliation

¹ International Laser Center, Minsk, Belarus. yvolk@ilc.by

PMID: 14765931
DOI: 10.1364/ao.43.000682

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.