We study the exfoliation of ultrathin ReS₂ nanosheets from the prepared ReS₂ powder and their application to Q-switched Er-doped fiber laser. XRD, Raman, and XPS spectra confirm the successful preparation of the layered ReS₂. SEM images show that the obtained ReS₂ sheets have lateral size below 200 nm. The thickness of the ReS₂ nanosheets is smaller than 5 nm according to the AFM results. ReS₂/PVA film is applied as a saturable absorber in an Er-doped Q-switched fiber laser, and a minimum pulse duration of 2.4 µs and an output power of 1.25 mW are obtained, indicating the potential application to Q-switched lasers.

中文翻译：

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ReS 2超薄纳米片的制备及其在调Q掺Er光纤激光器中的应用

我们研究了制备的ReS ₂粉末对超薄ReS ₂纳米片的剥落及其在调Q掺Er光纤激光器中的应用。XRD，拉曼和XPS光谱证实了层状ReS ₂的成功制备。SEM图像显示，所获得的ReS ₂片材的横向尺寸小于200nm。根据AFM结果，ReS ₂纳米片的厚度小于5 nm。ReS ₂ / PVA薄膜被用作掺Er调Q光纤激光器中的可饱和吸收体，其最小脉冲持续时间为2.4 µs，输出功率为1.25 mW，这表明可能将其应用于调Q激光器。