Quasi-guided modes and optical response in 2D photonic crystal slabs

S. G. Tikhodeev, A. L. Yablonskii, E. A. Muljarov, N. A. Gippius

Research output: Contribution to journalConference articlepeer-review


We calculate, via the scattering-matrix-based numerical method, the optical transmission properties and quasi-guided eigenmodes in a two-dimensionally (2D) square-lattice periodic photonic crystal slab (PCS) of finite thickness. We show that the appearance of dips in the transmission spectra of PCS is due to the interaction with resonant waveguide eigenmodes in the slab. The energy position and width of the dips in transmission provide the information on frequency and inverse radiative lifetime of the quasi-guided eigenmodes. We calculate the energies, linewidths and electromagnetic fields of such quasi-guided eigenmodes and analyze their symmetry and optical activity.

Original languageEnglish
Pages (from-to)559-560
Number of pages2
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2003
Externally publishedYes
Event10th International Symposium on Nanostructures: Physics and Technology - St. Petersburg, Russian Federation
Duration: 17 Jun 200221 Jun 2002


  • Photonic crystal slab
  • Quasiguided modes
  • Scattering matrix


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