Multi-functional light emitter based on band-edge modes near Γ-Point in honeycomb photonic crystal

Po Tsung Lee*, Tsan Wen Lu, Kuan Un Sio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

In this report, we demonstrate multi-functional light emitter based on band-edge modes near Γ-point in a two-dimensional honeycomb photonic crystal slab. Different band-edge modes near Γ-point are identified, including the monopole (Γ2), dipole (Γ4,5), and quadrupole (Γ6,7) modes. The monopole and quadrupole modes lasing are observed with high side-mode suppression-ratio of 35 dB and high index sensitivity of 375 nm per refractive index unit, which shows their potential in optical micro-laser and index sensor applications. Over five-fold photoluminescence enhancement with broad band-width of 100 nm from the dipole mode is also observed at room temperature, which shows the advantage of honeycomb lattice structure for designing high brightness light emitting diodes.

Original languageEnglish
Article number5762304
Pages (from-to)1797-1801
Number of pages5
JournalJournal of Lightwave Technology
Volume29
Issue number12
DOIs
StatePublished - 10 Jun 2011

Keywords

  • Enhanced light emission
  • honeycomb photonic crystal
  • optical sensor
  • semiconductor laser

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