Passively mode locked thulium and thulium/holmium doped fiber lasers using MXene Nb2C coated microfiber

Ahmad, Harith and Ramli, R. and Ismail, N. N. and Aidit, Siti Nabila and Yusoff, Norazriena and Samion, Muhamad Zharif (2021) Passively mode locked thulium and thulium/holmium doped fiber lasers using MXene Nb2C coated microfiber. Scientific Reports, 11 (1). ISSN 2045-2322, DOI

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As a result of the emergence of two-dimensional (2D) materials for various opto-electronics applications, a new class of materials named MXenes have been attracting interests due to their outstanding nonlinear properties. In this work, an MXene niobium carbide (Nb2C) was proposed and demonstrated as a saturable absorber to induce mode-locking in thulium- and thulium/holmium-doped fiber lasers. The Nb2C solution was first prepared using the liquid exfoliation technique, and then deposited onto a microfiber for integration into the laser cavity. Stable mode-locking operation was observed in both laser cavities, where the center wavelengths of the laser were recorded at 1944 nm for the TDFL and 1950 nm for the THDFL. The generated pulses in the TDFL and THDFL had repetition rates of 9.35 and 11.76 MHz respectively, while their corresponding pulse widths were 1.67 and 1.34 ps. Both of the lasers were highly stable, having SNR values of more than 52 dB and showed no major fluctuations when tested for their long-term stabilities. The results demonstrate an excellent performance of the Nb2C as a saturable absorber, offering opportunities to further explore MXenes for future photonics devices.

Item Type: Article
Funders: Universiti Malaya (RK021-2019), Universiti Malaya (TOP100PRC), Universiti Malaya (RU002-2020)
Uncontrolled Keywords: Mode locked thulium; Thulium/holmium doped fiber lasers; MXene Nb2C; Coated microfiber
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
T Technology > T Technology (General)
Divisions: Faculty of Science > Department of Physics
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 09 Aug 2022 03:07
Last Modified: 09 Aug 2022 03:07

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