Generation of Bright–Dark Pulses in Erbium-Doped Fiber Lasers Based on a Germanene-Saturable Absorber
Lie Shi,
Yujia Xue,
Baohao Xu
et al.
Abstract:As a group IV graphene-like material, germanene has fast carrier relaxation time and excellent nonlinear saturable absorption properties, which make it have a broad application prospect in the field of optics. However, in the field of laser applications, it has not been sufficiently studied. In this study, the energy band and optical property calculations of germanene with two structural defects were performed based on the density functional theory. The germanene nanosheet prepared by a liquidphase exfoliation… Show more
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