Passive Q-switched pulse fibre laser with molybdenum titanium aluminum carbide (Mo2TiAlC2) saturable absorber

In our study, we employed a Mo 2 TiAlC 2 thin film as a passive saturable absorber (SA) to create a stable pulsed fibre laser at 1564.52 nm. We synthesized a Mo 2 TiAlC 2 -PVA thin film with a 6% modulation depth and a 10 MW/cm 2 saturation intensity. This thin film was integrated into the laser cav...

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Bibliographic Details
Published inJournal of modern optics Vol. 70; no. 10; pp. 661 - 672
Main Authors Zaini, M. A. Z., Rahman, M. F. A., Latiff, A. A., Rusdi, M. F. M., Roslan, I. A. Z., Harun, S. W.
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 07.06.2023
Taylor & Francis Ltd
Subjects
Absorbers
Aluminum carbide
Connectors
Fiber lasers
fibre laser
MAX phase
passive saturable absorber
Pulse duration
Q switched lasers
Q-switched laser
Signal to noise ratio
Switching
Thin films
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Summary:In our study, we employed a Mo 2 TiAlC 2 thin film as a passive saturable absorber (SA) to create a stable pulsed fibre laser at 1564.52 nm. We synthesized a Mo 2 TiAlC 2 -PVA thin film with a 6% modulation depth and a 10 MW/cm 2 saturation intensity. This thin film was integrated into the laser cavity between FC/PC fibre connectors, enabling Q-switching over a pump power range of 30 mW to 120 mW. This resulted in an increased repetition rate from 31.1 kHz to 66.83 kHz and a reduced pulse duration from 13.45 µs to 6.35 µs. The pulse train's stability was confirmed by a high signal-to-noise ratio (SNR) of 58 dB. The laser achieved a maximum output power of 6.56 mW and a pulse energy of 98.16 nJ. These results demonstrate Mo 2 TiAlC 2 as a viable Q-switching modulator in the 1.55-µm wavelength range, with promising applications in compact and efficient pulsed fibre lasers.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340.2024.2316115