How to calculate complex index of refraction ? himanshu1985 - Sun, 06/09/2013 - 04:14 I want to plot reflectance of silicon vs wavelength. I have values for real and imaginary part of the refractive index. How can I get value of complex index of refraction from it ? I referred to the excel file provided by you guys. But I am using different equations for plotting reflectance where I need to input value of complex index of refraction. Actually I want to extend this to GaAs Solar cell which has texture on its surface.