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以C_(60),C_(70)为代表的富勒烯材料,自Kr(?)tschmer等人发现其有效制备方法之后,已成为材料科学研究的热点之一,被认为在半导体、超导体、有机导体、非线性光学、金刚石薄膜合成、有机化学、医药、润滑等方面有着巨大的潜在应用价值.尤其是作为一种新型光学材料而倍受人们关注.C_(60)由于具有共轭大π电子云体系而表现出强烈的三阶非线性光学效应,使其有可能成为十分有前途的非线性光学材料,而其反饱和吸收特性则使其可以制成光限幅器件、光双稳器件和全光学开关等.本文研究了沉积于粗糙介质表面C_(60)薄膜的波导Raman散射(waveguide Raman scattering).波导Raman散射是结合集成光学和Raman散射的一种测试介质上薄膜性能的灵敏方法,文献[4]报道了C_(60)薄膜的波导Raman散射现象,但是用的光源为100mW的Ar~+激光.然而,这种较强的激光有可能破坏C_(60)膜中的分子结构诸如发生聚合反应等,从而影响其本征的Raman谱.本文报道了采用30mW的He-Ne激光为激发光源,观察到粗糙介质表面C_(60)薄膜的波导Raman散射增强效应.
Fullerene materials represented by C_ (60) and C_ (70) have become one of the hot topics in materials science since Kr (?) Tschmer et al. Discovered their effective preparation methods. They are considered as one of the most promising materials in semiconductors, superconductors, Organic conductors, nonlinear optics, diamond thin film synthesis, organic chemistry, medicine, lubrication and so on, have great potential applications, especially as a new type of optical material and much attention.C_ (60) Electron cloud system and showed a strong third-order nonlinear optical effect, making it possible to become a very promising nonlinear optical materials, and its anti-saturation absorption characteristics make it possible to make optical limiting devices, optical bistable devices And all-optical switch, etc. The waveguide Raman scattering of C_ (60) thin film deposited on the surface of rough media is studied in this paper.Wavelength Raman scattering is a sensitive method to test the properties of thin films on media by integrating optical and Raman scattering , [4] reported the waveguide Raman scattering of C_ (60) films, but the light source used was 100mW Ar ~ + laser, however, the stronger laser could damage the molecular structure of C_ (60) Such as polymerisation and so on, thus affecting its intrinsic Raman spectrum.In this paper, the Raman scattering enhancement effect of waveguide C_ (60) film on a rough medium surface is observed by using a He-Ne laser at 30mW as the excitation light source.