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Carbon nanotubes for ultrafast photonics

We report characterization by absorption and photoluminescence excitation (PLE) spectroscopy of carbon nanotube solutions, which are then used for nanotube‐based composite preparation. PLE shows the presence of bundles in the solution. The composite show a saturation intensity of 5 MW/cm2 and is used in a fibre laser to generate pulses as short as 866 fs at about 1530 nm. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)