Optical nonlinearity in nanostructured carbon thin films fabricated by pulsed laser deposition technique

被引：15

作者：

Kumar, Indrajeet ^{[1
]}

Khare, Alika ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Phys, Laser & Photon Lab, Gauhati 781039, Assam, India

来源：

THIN SOLID FILMS | 2016年 / 611卷

关键词：

Pulsed laser deposition; Thin films; Optical nonlinearity; Z-scan; DIAMOND-LIKE CARBON; NANOTUBES; DEVICES; PLD;

D O I：

10.1016/j.tsf.2016.05.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present paper, the measurement of nonlinear refractive index coefficient in nanostructured carbon thin films deposited via pulsed laser deposition (PLD) technique is reported. The PLD carbon thin films were characterized by micro-Raman spectroscopy and ellipsometry. Raman spectra showed characteristic D and G band around similar to 1350 cm(-1) and similar to 1580 cm(-1) respectively. The nonlinear refractive index of the carbon films was measured by closed aperture Z-scan technique using He-Ne laser. The nonlinear refractive index coefficient of carbon thin films was found to increase from (6.08 +/- 0.75) x 10(-4) cm(2)/W to (1.69 +/- 0.13) x 10(-3) cm(2)/W with the deposition temperature from room temperature to 750 degrees C, respectively. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：56 / 61

页数：6

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