Abstract
This work demonstrates a femtosecond pulse generation of erbium-doped fibre laser utilising nickel oxide (NiO) as saturable absorbing material. The prepared composite of NiO/polydimethylsiloxane (PDMS) was successfully transferred onto a plane of tapered fibre through spin-coating technique. Based on the evanescent field interaction of NiO at tapered fiber region, the fabricated NiO/PDMS-saturable absorber exhibited 4.0% modulation depth and 135.5 MW/cm2 saturation intensity. The integration of this saturable absorber device established a mode-locked operation at 50.0 mW pump power, with ultrafast pulse width of 793 fs operating at the centre wavelength of 1561.27 nm. The pulse repetition rate of 8.0 MHz, with 0.89 nJ energy was attained at 250.0 mW pump power. These research findings open an avenue for further advancement of transition metal oxides in the future of ultrafast photonics.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
