Open AccessMulti-wavelength bright-dark pulse pair fiber laser based on rhenium disulfide
Author(s) -
Ruwei Zhao,
Guoru Li,
Baitao Zhang,
Jingliang He
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.005819
Subject(s) - saturable absorption , materials science , optics , fluence , fiber laser , laser , pulse (music) , rhenium , mode locking , wavelength , optoelectronics , pulse duration , physics , detector , metallurgy
As a new member of transition metal dichalcogenides (TMDs), rhenium disulfide (ReS 2 ), with a nearly unchanged direct bandgap from bulk to monolayer form, is attractive in physics and material fields. By using the optically driving deposition method, the ReS 2 saturable absorber (SA) has been fabricated with a modulation depth and saturation fluence of 6.9% and 27.5 μJ/cm 2 , respectively. Based on the ReS 2 -SA, a multi-wavelength bright-dark pulse pair from a mode-locked fiber laser has been observed experimentally for the first time, to the best of our knowledge. The saturable absorbing ability of the ReS 2 is attributed to the formation of the bright pulses and the dark pulses. The cross-phase modulation (XPM) caused by different wavebands of bright pulse and dark pulse support the coexisting of the bright-dark pulse pair.