Magnesium- and zinc-aluminosilicate cobalt-doped glass ceramics as saturable absorbers for diode-pumped 13-μm laser
2004; Optica Publishing Group; Volume: 43; Issue: 3 Linguagem: Inglês
10.1364/ao.43.000682
ISSN0003-6935
AutoresYuri V. Volk, Igor A. Denisov, A. M. Malyarevich, K. V. Yumashev, О. С. Дымшиц, A. V. Shashkin, А. А. Жилин, Ук Канг, Kyeong-Hee Lee,
Tópico(s)Photonic Crystal and Fiber Optics
ResumoQ 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.
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