Abstract

Q-switched solid-state lasers operating at 1645nm and 1617nm have important applications for the measurement of the greenhouse gas methane (CH₄) and the wind field. Fibre laser resonantly pumped Er:YAG crystal lasers have been widely studied to generate 1645 nm and 1617 nm lasers [1,2]. In recent years, Er:YAG polycrystalline ceramics are also becoming attractive due to their advantages over conventional single crystals, such as size scalability and higher doping concentrations[3]. In this talk we will report Q-switched Er:YAG ceramic lasers operating at 1645 nm and 1617 nm.

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