Abstract
Transparent glass-ceramics (GCs) containing nanocrystals (mean diameter of 7–9 nm) are synthesized by heat treatments at 850–950°C from magnesium aluminosilicate glass nucleated by and doped with and CoO. The GCs exhibit a broadband absorption due to the ions, low saturation fluence (), fast recovery time of initial absorption (), and high laser damage threshold (). They are used for passive -switching of a diode side-pumped Er,Yb:glass laser generating 3.1 mJ/20 ns pulses (peak power, 155 kW) at 1535 nm with a output mode. The -switching performance of the -based GCs is compared with that for various -doped GCs and single crystal. The prepared GCs are promising for further applications in passively -switched Er:YAG and other Er crystalline (or ceramic) lasers.
© 2017 Optical Society of America
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