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

Siti Nur Fatin Zuikafly; Harith Ahmad; Mohd Faizal Ismail; Mohd Azizi Abdul Rahman; Wira Jazair Yahya; Nurulakmar Abu Husain; Khairil Anwar Abu Kassim; Hafizal Yahaya; Fauzan Ahmad

doi:10.3390/mi14051048

Micromachines (May 2023)

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

Siti Nur Fatin Zuikafly,
Harith Ahmad,
Mohd Faizal Ismail,
Mohd Azizi Abdul Rahman,
Wira Jazair Yahya,
Nurulakmar Abu Husain,
Khairil Anwar Abu Kassim,
Hafizal Yahaya,
Fauzan Ahmad

Affiliations

Siti Nur Fatin Zuikafly: Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia
Harith Ahmad: Photonics Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia
Mohd Faizal Ismail: Photonics Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia
Mohd Azizi Abdul Rahman: Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia
Wira Jazair Yahya: Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia
Nurulakmar Abu Husain: Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia
Khairil Anwar Abu Kassim: Malaysian Institute of Road Safety Research, Kajang 43000, Malaysia
Hafizal Yahaya: Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia
Fauzan Ahmad: Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur 54100, Malaysia

DOI: https://doi.org/10.3390/mi14051048
Journal volume & issue: Vol. 14, no. 5
p. 1048

Abstract

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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.

Published in Micromachines

ISSN: 2072-666X (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mechanical engineering and machinery
Website: https://www.mdpi.com/journal/micromachines

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