Design of single-walled carbon nanotubes with a large two-photon absorption cross section

被引：30
|
作者：
Cheng, WD [1 ]
Wu, DS
Li, XD
Lan, YZ
Zhang, H
Chen, DG
Gong, YJ
Zhang, YC
Li, FF
Shen, J
Kan, ZG
机构：
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Grad Sch, State Key Lab Struct Chem, Fujian 350002, Peoples R China
[2] Chinese Acad Sci, Fujian Inst Res Struct Matter, Grad Sch, Lab Mat Chem & Phys, Fujian 350002, Peoples R China
来源：
PHYSICAL REVIEW B | 2004年 / 70卷 / 15期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1103/PhysRevB.70.155401
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Resonant enhancements of the two-photon absorption cross sections delta have been investigated for different types of seven single-walled carbon nanotubes. The obtained results show that the delta values increase as degree of curvature decreases, that is, delta values increase as n increase for (n,n) tubes (n=3,4,5). The delta values linearly vary with the lengths for the (n,m) of mnot equaln tubes. The origination of a large two-photon absorption cross section has been discussed and it is ascribed to the dispersion effect of tube radius and large pi-electron delocalizations in fine open carbon nanotubes.
引用
收藏
页码：155401 / 1
页数：6
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