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Q-switched Tm3+-doped multi-ring fibre laser operating at 1.96 μm

Sójka Łukasz, Pajewski Łukasz, Sujecki Sławomir, Lamrini Samir, Prorok Mateusz, Miluski Piotr, Kochanowicz Marcin, Łodziński Marek, Pisarski Wojciech A., Dorosz Dominik

Opto-Electronics Review

2025

Vol. 33, No. 4

art. no. e155905

A realisation of a Q-switched Tm³⁺-doped fibre laser operating at 1.96 μm wavelength isreported. The Tm³⁺-doped fibre was fabricated using a novel multi-ring modified chemicalvapour deposition-chelate doping technique (MCVD-CDT) technology. The developed laseremits pulses at a repetition rate of 3 kHz with an energy of 84 μJ and a duration of 272 ns,which corresponds to a peak power of 309 W. The experimental results confirm that thefabricated Tm³⁺-doped multi-ring, large mode area fibre is a promising candidate fordeveloping high-energy Q-switched lasers operating near 2 μm wavelength.