Title :
Ultrafast multiple-pulse excitation spectroscopy of /spl pi/-conjugated polymers
Author_Institution :
Lucent Technol. Bell Labs., Murray Hill, NJ, USA
Abstract :
Summary form only given. A novel spectroscopy is used to study ultrafast relaxation between different excited states in conjugated polymers and other organics. We demonstrate optical exciton dissociation, which in molecular systems is hindered by fast internal conversion.
Keywords :
charge transfer states; conducting polymers; excited states; excitons; nonradiative transitions; time resolved spectra; two-photon spectra; PPV derivatives; alpha-hexathiophene; charge transfer states; excited states; fast internal conversion; optical exciton dissociation; pi-conjugated polymers; pump-probe transient photomodulation; single molecular crystals; tetracene; two-photon states; ultrafast multiple-pulse excitation spectroscopy; ultrafast relaxation; Electromagnetic wave absorption; Monitoring; Optical coupling; Optical polymers; Optical pulses; Optical pumping; Pulse amplifiers; Spectroscopy; Stationary state; Ultrafast optics;
Conference_Titel :
Quantum Electronics Conference, 2000. Conference Digest. 2000 International
Conference_Location :
Nice, France
Print_ISBN :
0-7803-6318-3
DOI :
10.1109/IQEC.2000.908201
