In this work, a Q-switched fiber laser is demonstrated using quantum dots (QDs) cadmium sulfide (CdS) as a saturable absorber (SA) in an erbium-doped fiber laser (EDFL) system. The QD CdS is synthesized via the microwave hydrothermal assisted method and embedded into polyvinyl alcohol (PVA). The QD CdS/PVA matrix film is sandwiched in between two fiber ferrules by a fiber adapter. The generation of Q-switched fiber laser having a repetition rate, a pulse width, and a peak-to-peak pulse duration of 75.19 kHz, 1.27 μs, and 13.32 μs, respectively. The maximum output power of 3.82 mW and maximum pulse energy of 50.8 nJ are obtained at the maximum pump power of 145.9 mW. The proposed design may add to the alternative material of Q-switched fiber laser generation, which gives a high stability output performance by using quantum dots material as a saturable absorber.

在这项工作中，展示了一种使用量子点（QDs）硫化镉（CdS）作为掺do光纤激光器（EDFL）系统中的可饱和吸收体（SA）的调Q光纤激光器。QD CdS通过微波水热辅助方法合成，并嵌入聚乙烯醇（PVA）中。QD CdS / PVA基质薄膜通过光纤适配器夹在两个光纤套管之间。Q开关光纤激光器的产生，其重复频率，脉冲宽度和峰峰值脉冲持续时间分别为75.19 kHz，1.27μs和13.32μs。在145.9 mW的最大泵浦功率下，可获得3.82 mW的最大输出功率和50.8 nJ的最大脉冲能量。拟议的设计可能会增加产生Q开关光纤激光器的替代材料，