All-fiberized, mode-locked laser at 1.95μm using copper chalcogenide Cu2Te-based evanescent field interaction

• Main Authors: Ahmad, Hijaz, Aidit, S. N., Yusoff, Norazriena, Ismail, Norliana N., Ismail, Mohammad Faizal, Abdul Kadir@Jaafar, Muhammad Zamzuri, Thambiratnam, Kavintheran
• Format: Article
• Language: English; English
• Published: Elsevier B.V. 2020
• Subjects: Q Science (General); QC Physics
• Online Access: http://irep.iium.edu.my/87970/13/87970_All-fiberized%2C%20mode-locked%20laser%20at%201.95%20%CE%BCm%20using_ARTICLE.pdf; http://irep.iium.edu.my/87970/2/87970_All-fiberized%2C%20mode-locked%20laser_scopus.pdf; http://irep.iium.edu.my/87970/; https://www.sciencedirect.com/science/article/abs/pii/S003040182030746X?via%3Dihub

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 SA 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.