Femtosecond spectroscopy of optical excitations in single-walled carbon nanotubes: evidence for exciton-exciton annihilation.

Ma, Y.-Z., Valkunas, L., Dexheimer, S. L., Bachilo, S. M., Fleming, G. R., Femtosecond spectroscopy of optical excitations in single-walled carbon nanotubes: evidence for exciton-exciton annihilation., Phys. Rev. Lett. 94: 157402 2005