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  • Dual Regime Mode-Locked and...
    Zuikafly, Siti Nur Fatin; Ahmad, Harith; Ismail, Mohd Faizal; Abdul Rahman, Mohd Azizi; Yahya, Wira Jazair; Abu Husain, Nurulakmar; Abu Kassim, Khairil Anwar; Yahaya, Hafizal; Ahmad, Fauzan

    Micromachines (Basel), 05/2023, Volume: 14, Issue: 5
    Journal Article

    We investigate the dynamics of high energy dual regime unidirectional Erbium-doped fiber laser in ring cavity, which is passively Q-switched and mode-locked through the use of an environmentally friendly graphene filament-chitin film-based saturable absorber. The graphene-chitin passive saturable absorber allows the option for different operating regimes of the laser by simple adjustment of the input pump power, yielding, simultaneously, highly stable and high energy Q-switched pulses at 82.08 nJ and 1.08 ps mode-locked pulses. The finding can have applications in a multitude of fields due to its versatility and the regime of operation that is on demand.