Photoluminescence clamping with few excitons in a single-walled carbon nanotube

Y. -F. Xiao, T. Q. Nhan, M. W. B. Wilson +1

Single air-suspended carbon nanotubes (length 2 - 5 microns) exhibit high optical quantum efficiency (7 - 20%) for resonant pumping at low intensities. Under ultrafast excitation,…