Morphology Dependence of Power Spectra for Different Polarized States from Two-Dimensional Active Random Media

Spectra for two polarized states with competition on the inverted population in a set of two-dimensional (2D) active random media are calculated, and these random media have the same random constitution but different shapes. Results show that the power spectra for the two polarized states are all morphology dependent in the competition. The appropriate design of the shapes has an obvious effect on the selection of TM polarized modes and can improve the adverse situation of the TM polarized state in the competition. Such a property presents a new mode-selecting technique for each polarized mode in random media.