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- W2896598674 abstract "Low-dimensional nanomaterials, owing to their unique and versatile properties, are very attractive for enormous electronic and optoelectronic applications. PbS quantum dots (QDs), characterized by a large Bohr radius and size-tunable bandgap, are especially interesting for photonic applications in the near-infrared region. Here, oleic acid capped colloidal PbS QDs as a saturable absorber are investigated for ultrashort-pulse generation. The PbS QDs exhibit outstanding nonlinear saturable absorption properties at 1550 nm: a modulation depth up to 44.5% and a thermal damage threshold larger than 30 mJ/cm2. By incorporating PbS QDs into a fiber laser, a transform-limited soliton pulse as short as 559 fs with a bandwidth of 4.78 nm is realized at 1563 nm. Numerous applications may benefit from the nonlinear saturable absorption properties of PbS QDs, such as near-infrared pulsed lasers and modulators." @default.
- W2896598674 created "2018-10-26" @default.
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- W2896598674 date "2018-10-16" @default.
- W2896598674 modified "2023-10-14" @default.
- W2896598674 title "PbS quantum dots as a saturable absorber for ultrafast laser" @default.
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- W2896598674 doi "https://doi.org/10.1364/prj.6.001028" @default.
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