Passive Q-switched pulse fibre laser with molybdenum titanium aluminum carbide (Mo2TiAlC2) saturable absorber
Document Type
Article
Publication Date
6-1-2023
Abstract
In our study, we employed a Mo2TiAlC2 thin film as a passive saturable absorber (SA) to create a stable pulsed fibre laser at 1564.52 nm. We synthesized a Mo2TiAlC2-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 mu s to 6.35 mu s. 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 Mo2TiAlC2 as a viable Q-switching modulator in the 1.55-mu m wavelength range, with promising applications in compact and efficient pulsed fibre lasers.
Keywords
Q-switched laser, MAX phase, fibre laser, passive saturable absorber
Divisions
sch_ecs
Funders
Centre for Telecommunication Research and Innovation (CeTRI),Photonics Engineering Research Group (PERG),Universiti Teknikal Malaysia Melaka
Publication Title
Journal of Modern Optics
Volume
70
Issue
10
Publisher
Taylor & Francis
Publisher Location
2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND