Ultrafast stretched-pulse fiber laser mode-locked by carbon nanotubes
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- Sun, Z., Hasan, T., Wang, F. et al. Nano Res. (2010) 3: 404. doi:10.1007/s12274-010-1045-x
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Ultrafast fiber sources having short pulses, broad bandwidth, high energy, and low amplitude fluctuations have widespread applications. Stretched-pulse fiber lasers, incorporating segments of normal and anomalous dispersion fibers, are a preferred means to generate such pulses. We realize a stretched-pulse fiber laser based on a nanotube saturable absorber, with 113 fs pulses, 33.5 nm spectral width and ˜0.07% amplitude fluctuation, outperforming current nanotube-based designs.