Mode-locked fiber laser with MoSe2 saturable absorber based on evanescent field**Project supported by the National Key Research and Development Program of China (Grant No. 2018YFB0504500), the National Natural Science Foundation of China (Grant Nos. 61475171, 61705244, 61307056, and 61875052), and the Natural Science Foundation of Shanghai, China (Grant Nos. 17ZR1433900 and 17ZR1434200).

Abstract

An all-fiber mode-locked fiber laser was achieved with a saturable absorber based on a tapered fiber deposited with layered molybdenum selenide (MoSe2). The laser was operated at a central wavelength of 1558.35 nm with an output spectral width of 2.9 nm, and a pulse repetition rate of 16.33 MHz. To the best of our knowledge, this is the first report on mode-locked fiber lasers using MoSe2 saturable absorbers based on tapered fibers.