Title :
Inter-subband exciton relaxation dynamics in single-walled carbon nanotubes
Author :
Manzoni, C. ; Gambetta, A. ; Lanzani, G. ; Cerullo, Giulio ; Menna, E. ; Meneghetti, M.
Author_Institution :
Dipt. di Fisica, Politecnico di Milano, Milan, Italy
Abstract :
We study inter-subband exciton relaxation dynamics in semiconducting single-walled carbon nanotubes with sub-30-fs temporal resolution. We measure a 40-fs time constant for energy relaxation from the second to the first excitonic transition.
Keywords :
carbon nanotubes; excitons; high-speed optical techniques; optical saturable absorption; semiconductor materials; visible spectra; 30 fs; 40 fs; C; energy relaxation; excitonic transition; inter-subband exciton relaxation dynamics; photobleaching; semiconducting carbon nanotube; single-walled carbon nanotube; temporal resolution; time constant; Carbon nanotubes; Energy measurement; Excitons; Optical pulse generation; Probes; Pulse amplifiers; Semiconductivity; Spectroscopy; Time measurement; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Print_ISBN :
1-55752-796-2
DOI :
10.1109/QELS.2005.1548827
