Title :
Ultrafast intra-excitonic quasiparticle annihilation by exciton-exciton scattering in individually isolated singlewalled carbon nanotubes
Author :
Sangwan Sim ; Jeongmook Choi ; Seongchu Lim ; Young Hee Lee ; Hyunyong Choi
Author_Institution :
Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We present direct experimental measurement of exciton-exciton annihilation as fast photo-bleaching at exactly twice the lowest exciton energy in individually isolated single-walled carbon nanotubes. Exciton-exciton scatterings were rigorously identified by determining the 1s-2p transition using ultrafast mid-infrared intra-excitonic spectroscopy.
Keywords :
carbon nanotubes; excitons; high-speed optical techniques; optical saturable absorption; quasiparticles; 1s-2p transition; C; exciton energy; exciton-exciton scattering; fast photobleaching; isolated single-walled carbon nanotubes; ultrafast intraexcitonic quasiparticle annihilation; ultrafast mid-infrared intraexcitonic spectroscopy; Carbon nanotubes; Excitons; Scattering; Sociology; Spectroscopy; Statistics; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
