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Q-switched Fiber Laser based on CdS Quantum Dots as a saturable absorber
Results in Physics ( IF 4.019 ) Pub Date : 2020-04-20 , DOI: 10.1016/j.rinp.2020.103123
N.M. Radzi; A.A. Latif; M.F. Ismail; J.Y.C. Liew; E. Wang; H.K. Lee; N. Tamcheck; N.A. Awang; F. Ahmad; M.K. Halimah; H. Ahmad

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.
更新日期:2020-04-22

 

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