Hexagonal lattice photonic crystal in active metallic microcavity

Hoi Lam TAM, R. Huber, K. F. Li, W. H. Wong, Y. B. Pun, Shu Kong SO, J. B. Xia, Kok Wai CHEAH*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


A hexagonal lattice photonic crystal was fabricated inside the metallic microcavity. And a thin film of Alq3 was incorporated inside the textured cavity as an active medium. The microcavity is designed such that the modified photonic modes due to the textured structure can couple to the excited electronic states of Alq3. This leads to changes in the emission characteristics of Alq3. From the angle-resolved transmission (ARTR) results, the photonic bandgap was observed at all angles from normal incident to 60°. The presence of surface plasmon (SP) was observed in both TM and TE modes of the transmission. Compare to the bulk Alq3 photoluminescence spectrum, significant modification of the photoluminescence (PL) spectrum was observed in the angle-resolved photoluminescence (ARPL). The photoluminescence spectra showed clear suppression in luminescence intensity for the range inside the photonic bandgap. We use decouple approximation for the standing wave modes and derive the photonic waveguide characteristics for two-dimensional textured metallic microcavities. The theoretical result is in good agreement to the experimental result.

Original languageEnglish
Pages (from-to)225-230
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Publication statusPublished - 2003
EventEngineered Porosity for Microphotonics and Plasmonics - Boston, MA., United States
Duration: 2 Dec 20034 Dec 2003

Scopus Subject Areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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