Effect of Surface Roughness on Laser Induced Nonlinear Optical Properties of Annealed ZnO Thin Films
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2012年第6期
论文作者：Vinay Kumari
文章页码：506 - 511
摘 要：Variation of nonlinear optical properties with surface roughness of ZnO thin films deposited on corning glass substrates at different annealing temperature（TA） was reported.The films were characterized by X-ray diffraction（XRD）,UV-Vis-NIR transmission and single beam z-scan technique using second harmonics of Nd:YAG laser.Surface morphology of the samples was investigated by atomic force microscopy（AFM）.Surface roughness was found minimum（8.4 nm） for ZnO sample annealed at 450 ℃.The nonlinear optical properties（NLO） were found to be dependent on surface roughness and the highest value of third order nonlinear susceptibility（χ～（3）=4.3×10～（-7） esu） was obtained for ZnO at TA 450 ℃.
Vinay Kumari1,2
摘 要：Variation of nonlinear optical properties with surface roughness of ZnO thin films deposited on corning glass substrates at different annealing temperature（TA） was reported.The films were characterized by X-ray diffraction（XRD）,UV-Vis-NIR transmission and single beam z-scan technique using second harmonics of Nd:YAG laser.Surface morphology of the samples was investigated by atomic force microscopy（AFM）.Surface roughness was found minimum（8.4 nm） for ZnO sample annealed at 450 ℃.The nonlinear optical properties（NLO） were found to be dependent on surface roughness and the highest value of third order nonlinear susceptibility（χ～（3）=4.3×10～（-7） esu） was obtained for ZnO at TA 450 ℃.
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