Observation of orthogonally polarized transverse electric and transverse magnetic oscillation modes in a microcavity excited by localized two-photon absorption

Orthogonally polarized transverse electric (TE) and transverse magnetic (TM) oscillation modes were observed in a microcavity excited by localized two-photon absorption. The polarization-dependent features of morphology-dependent resonance (MDR) effects were investigated in a microsphere under two-photon fluorescence excitation. Not only the orthogonal polarization nature of TE and TM oscillation modes was demonstrated but also the dependence of the strength and the polarization of MDR peaks on excitation locations in a microsphere.