We have demonstrated stable Q-switched mode-locked operation of an in-band pumped Ho : Y₂O₃ ceramic laser at 2117 nm by using an InGaAs/GaAs-based saturable absorber. An average output power of 330 mW is reached for 2.7 W of absorbed pump power with stable mode-locked pulses having a 98.9-MHz repetition rate and 100% modulation depth embedded inside Q-switched envelopes of ∼1.7-μs duration. The duration of the mode-locked pulses is estimated to be less than 1.5 ns.

中文翻译：

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2117 nm 带内泵浦 Ho : Y2O3 陶瓷激光器的稳定调Q锁模

我们已经通过使用基于 InGaAs/GaAs 的可饱和吸收体证明了带内泵浦 Ho : Y ₂ O _{3陶瓷激光器在 2117 nm 处的稳定}Q开关锁模操作。对于 2.7 W 的吸收泵浦功率，平均输出功率达到 330 mW，具有 98.9 MHz 重复率和 100% 调制深度的稳定锁模脉冲嵌入在约 1.7 μs 持续时间的Q开关包络内。锁模脉冲的持续时间估计小于 1.5 ns。