Strongly Coupled Surface Plasmon-Exciton Excitations in Small-Diameter Carbon Nanotubes

被引：0
|
作者：
Bondarev, I. V. [1 ]
Tatur, K. [1 ]
Woods, L. M. [1 ]
机构：
[1] N Carolina Cent Univ, Dept Phys, Durham, NC 27707 USA
来源：
2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9 | 2008年
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We study theoretically the interactions of excitonic states with surface electromagnetic modes of a single-walled carbon nanotube. We show that these interactions result in the exciton-plasmon coupling that is significant in its strength due to the presence of weakly-dispersive low-energy (similar to 0.5-2 eV) interband surface plasmon modes and large exciton excitation energies similar to 1 eV in small-diameter nanotubes. We estimate the exciton-plasmon Rabi splitting to be similar to 0.1 eV which is close to that in organic semiconductors and much larger than that in hybrid semiconductor-metal nanoparticle molecules. We calculate the exciton absorption lineshape and show the line splitting effect as the exciton is tuned to the nearest interband surface plasmon resonance of the nanotube. (C) 2008 Optical Society of America
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页码：3459 / 3460
页数：2
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