Infrared Optical Response of Dichalcogenide WSSe Nanosheets-Based Saturable Absorber
DOI:
https://doi.org/10.2025/4ar3st20Abstract
In this work, nanosheets from dichalcogenide WSSe alloy were synthesized by liquid-phase exfoliation (LPE) method and their linear and nonlinear optical responses in the IR region were studied. Linear transmission measurements showed good optical homogeneity of these nanosheets with average transmittance of 84-86%, whereas nonlinear transmission measurements revealed clear saturated behavior with low saturation intensity (~12 MW/cm2), modulation depth of about 10%, and stability with intensity up to 52 MW/cm2 without photodamage. These results confirm that these WSSe nanosheets can be used as saturable absorbing material in ultrafast laser applications for mode-locking systems and short laser pulse generation in the IR region.
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