O-band mode-locked praseodymium-doped fluoride fiber laser using nickel phosphorus trisulfide

H. Ahmad, B. Nizamani, A. D. Azam, M. Z. Samion, M. Yasin, S. Sun

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In this work, we demonstrated a mode-locked fiber laser operating in the O-band region using nickel phosphorus trisulfide (NiPS3) as a saturable absorber (SA) for the first time. An arc-shaped fiber was coated with a layer of NiPS3 to serve as the SA which was then integrated into a praseodymium (Pr3+)-doped fluoride fiber laser (PDFFL) cavity for signal emission at 1.3 µm. The mode-locked laser operates at a center wavelength of 1302.3 nm, around the zero-dispersion wavelength. The mode-locked PDFFL has a repetition rate and signal-to-noise ratio (SNR) of 0.403 MHz and 55 dB, respectively. Ultrashort pulses of 370 fs were generated using the NiPS3-SA with a pulse energy of 17.1 nJ and a peak power of 46.2 kW. The NiPS3-SA in our work has shown the potential of this 2D nanomaterial ability to generate mode-locked pulses at 1.3 µm, which was rarely explored.

Original languageEnglish
Article number109090
JournalOptics and Laser Technology
Publication statusPublished - May 2023


  • Fiber laser
  • Fluoride fiber
  • Mode-locking
  • O-band
  • Saturable absorber


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