Classification of Modes in Suspended-Membrane 19-Missing-Hole Photonic-Crystal Microcavities
Suspended-membrane 19-missing-hole microcavities in triangular lattice photonic crystals are numerically modeled by a three-dimensional finite-difference time-domain method. The resonance frequencies and the quality factors are calculated by interpolation of the discrete Fourier transformation series of the field with a Padé polynomial. The numerical results are compared with the photoluminescent spectra measured on the cavity of a nearly identical dimension. The symmetry properties of the defect modes are analyzed with the group theory, and resonance modes in the photonic-crystal cavities are identified as irreducible representations of the C_6v point group. The far-field radiations of the identified modes in the free space are also calculated by use of a vector Green's function. It is found that the numerical results agree very well with the experimental measurement in various aspects.
Kuang, Wan; Cao, Jiang R.; Yang, Tian; Choi, Sang-Jun; Lee, Po-Tsung; O'Brien, John D.; and Dapkus, P. Daniel. (2005). "Classification of Modes in Suspended-Membrane 19-Missing-Hole Photonic-Crystal Microcavities". Journal of the Optical Society of America B, 22(5), 1092-1099.