Abstract
The effects of argon ion implantation on the structure and refractive index of CR-39 polymer has been investigated. CR-39 specimens were implanted with 130 keV argon ions in the fluence range of 5×1014-1×1016 ions cm-2. The structural changes produced as an effect of implantation has been studied using specular reflectance Fourier transform infrared spectroscopic technique. The absorption and specular reflectance spectra in the visible region of these specimens has been recorded by using UV-Visible spectroscopic technique. The extinction coefficient has been measured using the absorption coefficient values calculated from absorption spectra. Utilizing the values of extinction coefficient and reflectance, the refractive index of virgin and implanted specimens has been calculated. Significant enhancement in the refractive indices of implanted specimens has been observed. These changes in the values of refractive index have been further correlated with the hydrogen depleted graphitelike structures formed on the surface of implanted specimens as evidenced from specular reflectance FTIR technique. The potential of forming planar waveguides using these implanted specimens has been explored.
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