Analysis of depolarization of three wave-plates compound depolarizer by means of Mueller matrix

In order to analyze effect of three wave-plates compound depolarizer on depolarization of monochromatic light, theoretical analysis was made by using Muller matrix and Stokes vectors. Expression of degree of polarization (DOP) of the output light was computed after monochromatic linear depolarized light passing through a three wave-plates compound depolarizer. The relationship between various parameters and DOP was also discussed. The results show that the structure is able to be depolarized completely. When =0rad and 25rad/s, P1%. The result has important reference of design and research of depolarizers.