Abstract

The nickel–cobalt (NiCo) layered double hydroxide (LDH) is prepared by ultrasonic liquid phase-assisted exfoliation method and dispersed onto mirror forming saturable absorber (SA). With NiCo-LDH SA, a continuous wave mode-locked laser at 1065.9 nm with a maximum output power of 1.72 W was achieved with a repetition frequency of 69 MHz and a pulse width of 18 ps. To the best of our knowledge, this is the first implementation of the NiCo-LDH as a SA for continuous wave mode-locked laser operation, which demonstrates the great potential of the NiCo-LDH for integration into lasers.

中文翻译：

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镍钴层状双氢氧化物作为连续波锁模激光器的可饱和吸收体

摘要

采用超声液相辅助剥离法制备镍钴（NiCo）层状双氢氧化物（LDH），并将其分散到镜面形成的可饱和吸收体（SA）上。利用NiCo-LDH SA，实现了1065.9 nm的连续波锁模激光器，最大输出功率为1.72 W，重复频率为69 MHz，脉冲宽度为18 ps。据我们所知，这是首次将 NiCo-LDH 作为 SA 用于连续波锁模激光器操作，这展示了 NiCo-LDH 在集成到激光器中的巨大潜力。