<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:14pt"><div>Hi everybody<br>It is a nice group and I hope that I benefited from it and also give the benefit..<br>I use PWE method and I want to find the refractive index as a function of wavelength ; <br>help me please</div></div></body></html>