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Influence of reducing-oxidizing conditions on the optical properties of Co2+-doped magnesium aluminosilicate glass ceramics and their use as an effective saturable absorber Q switch

Yuri V. Volk, Alexander M. Malyarevich, Konstantin V. Yumashev, Olga S. Dymshits, Alexander V. Shashkin, Alexander A. Zhilin, Uk Kang, and Kyeong-Hee Lee

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Abstract

Nonlinear optical properties of Co2+-doped magnesium aluminosilicate glass ceramics prepared under normal and reducing conditions are studied in the range of the 4 A 2 →4 T 1(4 F) transition of tetrahedral Co2+ ions. The results of passive Q switching of a 1.54-μm Er3+:glass laser with saturable absorbers made of Co2+-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 ∼20% of the Q-switching conversion efficiency, are achieved.

© 2004 Optical Society of America

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