All-fiberized Mode-Locked Laser at 1.95 μm using copper chalcogenide cu2Te-based evanescent field

• Main Authors: Ahmad, Harith, Aidit, Siti Nabila, Yusoff, Norazriena, Ismail, Mohammad Faisal, Ismail, N. N., Abdul Kadir@Jaafar, Muhammad Zamzuri, Thambiratnam, Kavintheran
• Format: Article
• Language: English
• Published: Elsevier Ltd 2020
• Subjects: QC Physics
• Online Access: http://irep.iium.edu.my/82013/1/82013_All-fiberized%20Mode-Locked%20Laser.pdf; http://irep.iium.edu.my/82013/; https://www.sciencedirect.com/science/article/abs/pii/S003040182030746X; https://doi.org/10.1016/j.optcom.2020.126329

For the first time, a copper telluride (Cu2Te) based saturable absorber (SA) was demonstrated for mode-locking in a thulium-doped fiber laser. Layers of Cu2Te were deposited onto a side polished fiber (SPF) using the optical deposition technique, forming an all-fiber SA device. The nonlinear optical properties of the SA device were investigated based on the balanced twin-detector measurement scheme. The Cu2Te-deposited (SPF) was capable of generating stable soliton mode-locked pulses with a pulse duration of 1.58 ps at a center wavelength of 1951 nm with a signal to noise ratio (SNR) of more than 60 dB, as well as a peak power of 250 mW and a pulse energy of 0.39 nJ.