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Dual Regime Mode-Locked and Q-Switched Erbium-Doped Fiber Laser by Employing Graphene Filament-Chitin Film-Based Passive Saturable Absorber

Zuikafly SNF 1 , Ahmad H 2 , Ismail MF 2 , Abdul Rahman MA 1 , Yahya WJ 1 , Abu Husain N 1 Show all authors , Abu Kassim KA 3 , Yahaya H 1 , Ahmad F 1

Affiliations 

  • 1 Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia
  • 2 Photonics Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia
  • 3 Malaysian Institute of Road Safety Research, Kajang 43000, Malaysia
Micromachines (Basel), 2023 May 14;14(5).
PMID: 37241671 DOI: 10.3390/mi14051048

Abstract

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.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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