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NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2021, 12 (4), P. 436–441

Ti3C2Tx thin film as a saturable absorber for passively generating Q-switched pulses in thulium-doped fiber laser cavity

M. A. Buntat – Fakulti Kejuruteraan Elektronik dan Kejuruteraan Komputer, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia, Malaysia
A. H. A. Rosol – Photonics Engineering Laboratory, Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
M. F. M. Rusdi – Photonics Engineering Laboratory, Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
A. A. Latif – Fakulti Kejuruteraan Elektronik dan Kejuruteraan Komputer, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia, Malaysia
M. Yasin – Department of Physics, Faculty of Science and Technology, Airlangga University, Surabaya, Indonesia; yasin@fst.unair.ac.id
S.W. Harun – Photonics Engineering Laboratory, Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; swharun@um.edu.my

We demonstrated a Q-switched thulium-doped fiber laser (TDFL) based on Mxene Ti3C2Tx saturable absorber (SA) as Q-switcher. Ti3C2Tx was obtained using selective etching and embedded into polyvinyl alcohol (PVA) film. As the film was added into a TDFL cavity, a stable Q-switched pulse train operating at 1996 nm was produced within a single mode 1552 nm pump power range from 161.8 to 237.1 mW. When the pump power was varied within this range, the repetition rate increased from 19.6 to 33.3 kHz while the pulse width decreases from 6.71 to 3.55 μs. To the best of our knowledge, this is the first report of a Ti3C2Tx SA for passively generating Q-switched pulses in the 2 μm wavelength region.

Keywords: MXene Ti3C2Tx, Q-switching, thulium doped fiber, energy efficiency.

PACS 42.60.Da, 42.70.Hj, 42.60.-v

DOI 10.17586/2220-8054-2021-12-4-436-441

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