Nonlinear optical absorption and reflection of single wall carbon nanotube thin films by Z-scan technique

被引：33

作者：

Shimamoto, Daisuke ^{[1
]}

Sakurai, Takaaki ^{[1
]}

Itoh, Minoru ^{[1
]}

Kim, Yoong Ahm ^{[1
]}

Hayashi, Takuya ^{[1
]}

Endo, Morinobu ^{[1
]}

Terrones, Mauricio ^{[2
]}

机构：

[1] Shinshu Univ, Fac Engn, Nagano 3808553, Japan

[2] IPICYT, Adv Mat Dept, San Luis Potosi 78210, Mexico

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 08期

关键词：

D O I：

10.1063/1.2884695

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Both the nonlinear optical transmission and reflection characteristics of HiPco-based single wall carbon nanotube (SWNT) thin films are studied by using the Z-scan method with femtosecond laser pulses at a wavelength of 1.46 mu m. The nonlinear absorption coefficient and nonlinear refractive index are obtained as (5.4 +/- 2.0) x 10(-7) cm/W and (1.1 +/- 0.5) x 10(-11) cm(2)/W, respectively, which are considerably greater than those of other optical materials. This large optical nonlinearity is ascribed to (a) homogeneously deposited thin nanotube film on optically transparent barium fluoride, (b) just-resonant excitation condition, and (c) intrinsic saturable absorption feature of SWNTs. (C) 2008 American Institute of Physics.

引用

页数：3

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