Classification of modes in suspended-membrane, 19-missing-hole photonic-crystal microcavities

Wan Kuang*, Jiang R. Cao, Tian Yang, Sang Jun Choi, Po-Tsung Lee, John D. O'Brien, P. Daniel Dapkus

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


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.

Original languageEnglish
Pages (from-to)1092-1099
Number of pages8
JournalJournal of the Optical Society of America B: Optical Physics
Issue number5
StatePublished - 1 Jan 2005

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