A complex index of refraction of soot particles is an important parameter in the processing calculation of the scattering characteristics of particles.The traditional KBr sample wafer transmission method requires particle size to meet the Mie scattering condition,and the testing process is very complex.In this paper,a novel method for producing a complex index of refraction measurement of particles based on the ellipsometry method was proposed.First,the ellipsometry measurement for the complex index of refr...