Controlling nonequilibrium phonon populations in single-walled carbon nanotubes.
We studied spatially isolated single-walled carbon nanotubes (SWNTs) immobilized in a quasi-planar optical lambda/2-microresonator using confocal microscopy and spectroscopy. The modified photonic mode density within the resonator is used to selectively enhance or inhibit different Raman transitions of SWNTs. Experimental spectra are presented that exhibit single Raman bands only. Calculations of the relative change in the Raman scattering cross sections underline the potential of our microresonator for the optical control of nonequilibrium phonon populations in SWNT.
Steiner
Mathias
M
Institut für Physikalische und Theoretische Chemie, Universität Tübingen, 72076 Tübingen, Germany.
Qian
Huihong
H
Hartschuh
Achim
A
Meixner
Alfred Johann
AJ
D000162:Acoustics; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008956:Models, Chemical; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013499:Surface Properties; D014732:Vibration
D046911:Macromolecular Substances; D037742:Nanotubes, Carbon