Polarization splitting of discrete states in square shaped organic photonic dots

Abstract

We analyze the polarization dependence of the discrete photonic states in an organic microcavity system that is laterally confined on the micron scale. Via microscopic photoluminescence measurements on square shaped photonic dots, we demonstrate a polarization splitting that increases up to 10 meV for higher order modes. These experimental results are evaluated using a vectorial waveguide approach and the splitting is attributed to phase shifts, which occur as a result of reflection at the side walls of the mesa structures. © 2009 American Institute of Physics.