Abstract
Two-dimensional materials have extensively promoted the development of ultrafast photonics in the past decade. In our work, the saturable absorption properties of ${\rm{ZrS}}{{\rm{e}}_2}$ were presented. The saturation intensity, modulation depth, and nonlinear absorption coefficient of the ${\rm{ZrS}}{{\rm{e}}_2}$ saturable absorber (SA) are about ${13.14}\;{\rm{MW/c}}{{\rm{m}}^2}$, 6.09%, and ${1.85}\;{{*}}\;{{1}}{{{0}}^{- 1}}\;{\rm{cm}}/{\rm{GW}}$. In the experiment, based on the ${\rm{ZrS}}{{\rm{e}}_2}$ SA, two types of solitons were recorded. A conventional soliton with a pulse width of 985 fs and a three-pulse bound state soliton have been obtained. Our experiment reveals that ${\rm{ZrS}}{{\rm{e}}_2}$ can be employed for generating multiple ultrafast soliton generations and possess promising application in ultrafast photonics.
© 2020 Optical Society of America
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