Journal
ACS NANO
Volume 8, Issue 5, Pages 4836-4847Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn500767b
Keywords
double-wall carbon nanotubes; polymer composites; saturable absorber; ultrafast laser
Categories
Funding
- EPSRC [GR/S97613/01, EP/E500935/1]
- ERC Grant NANOPOTS
- Royal Society
- European Research Council (ERC Starting Grant 2DNanoCaps)
- Science Foundation Ireland
- National Natural Science Foundation of China [11225421]
- Newton International Fellowship
- Teknologiateollisuus [TT-100]
- European Union [631610]
- Aalto University
- NSFC [61150110487]
- Royal Academy of Engineering (Graphlex)
- EPSRC [EP/E500935/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E500935/1, GR/S97613/01] Funding Source: researchfish
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We demonstrate wide-band ultrafast optical pulse generation at 1, 1.5, and 2 mu m using a single-polymer composite saturable absorber based on double-wall carbon nanotubes (DWNTs). The freestanding optical quality polymer composite is prepared from nanotubes dispersed in water with poly(vinyl alcohol) as the host matrix. The composite is then integrated into ytterbium-, erbium-, and thulium-doped fiber laser cavities. Using this single DWNT-polymer composite, we achieve 4.85 ps, 532 fs, and 1.6 ps mode-locked pulses at 1066, 1559, and 1883 nm, respectively, highlighting the potential of DWNTs for wide-band ultrafast photonics.
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