Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6888212 | Optical Fiber Technology | 2018 | 6 Pages |
Abstract
In this work, we propose and demonstrate a mode-locked thulium doped fiber laser (TDFL) with an integrated cobalt oxide (Co3O4) saturable absorber (SA). The SA is fabricated by suspending Co3O4 nanosheets in a polymer film before being secured between two fiber ferules. The laser operates in the anomalous dispersion regime, confirmed by the Kelly sidebands observed in the obtained optical spectrum. Mode-locking operation is obtained at a low threshold pump power of 77.32â¯mW, with further optimizations made using a polarization controller The laser generates pulses with a repetition rate of 11.36â¯MHz and a pulse width of 1.39â¯ps. The generated pulses are highly stable, with a high signal-to-noise ratio of 46.00â¯dB and minimum power fluctuations indicating a long-term stability. This work demonstrates a simple and a low-cost laser that would have potential applications for operation near the 2.0-µm region, especially for medical applications.
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Authors
H. Ahmad, M.Z. Samion, N. Yusoff,