Graphene and other extraordinary two-dimensional materials together with recent advances in optical modulators have set the foundations for the widespread applications of next-generation optoelectronic devices. In this paper, we report on the high-performance fundamentally mode-locked waveguide laser modulated by CVD-grown WSe2 as a saturable absorber. By incorporating WSe2 sample into a monolithic Nd:YVO4 waveguide platform, 6.526 GHz picosecond pulsed laser generation have been achieved at the wavelength of 1 μm with pulse duration as short as 47 ps. This work indicates promising applications of WSe2 for the development of on-chip ultrafast photonics devices.
Li Ziqi, Li Rang, Pang Chi, Zhang Yuxia, Yu Haohai, Chen Feng. WSe2 as an optical modulator for multi-gigahertz mode-locked waveguide lasers[J]. Chinese Optics Letters, 2019, 17(2): .
