Journal
OPTIK
Volume 230, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2021.166280
Keywords
Fiber laser; Mode-locked; Evanescent field interaction; Vanadium diselenide
Categories
Funding
- University of Malaya [RK021-2019, TOP100PRC, RU011-2019]
- International Islamic University Malaysia [MOHE] [FRGS/1/2018/TK04/UIAM/02/16]
- Ministry of Higher Education, Malaysia [HiCoE Phase II Funding]
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A stable passively mode-locked Thulium/Holmium-doped fiber laser was demonstrated by depositing layers of vanadium diselenide onto a D-shaped fiber. The VSe2-coated fiber was used as a saturable absorber in the ring cavity, achieving an output spectrum with a central wavelength of 1912 nm and a pulse repetition rate of 11.6 MHz.
A stable passively mode-locked Thulium/Holmium-doped fiber laser (THDFL) was demonstrated by depositing layers of vanadium diselenide (VSe2) onto a D-shaped fiber using the drop-casting method. The VSe2-coated D-shaped fiber was then incorporated into the ring cavity as a saturable absorber (SA). The cavity has a net dispersion of-1.37 ps2 while the central wavelength of the output spectrum was 1912 nm with a full width at half-maximum (FWHM) of 2.9 nm. The pulse repetition rate was 11.6 MHz with the pulse width of-1.4 ps at the maximum pump power. The fundamental frequency of the mode-locked output had a signal-to-noise ratio (SNR) of-47 dB. These results indicate that the metallic TMD VSe2 can serve as an effective SA in optical fiber laser applications at the 2.0 mu m region.
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