期刊
OPTICS COMMUNICATIONS
卷 285, 期 7, 页码 1920-1924出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2011.12.070
关键词
Carbon nanotubes; Porphyrin; Functionalization; Raman spectroscopy; Z-scan; Optical limiting
类别
A new nanocomposite is obtained by functionalizing carbon nanotubes (CNTs) with a water soluble metallo-prophyrin using a simple chemical technique and characterized by optical absorption, IR, and Raman spectroscopy. Results from spectroscopic studies indicate the noncovalent nature of interaction between CNTs and porphyrin. The ultrafast nonlinear response is characterized by measuring the nonlinear absorption coefficient and refractive index by z-scan technique in the femtosecond pulse regime. The nanocomposite is found to exhibit two-photon absorption (TPA) with a reasonably large nonlinear optical coefficient, whereas pure CNTs is known to exhibit saturable absorption. Design of such water soluble nanocomposites offers scope for obtaining materials with enhanced ultrafast optical nonlinearity. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据