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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 29,
  • Issue 12,
  • pp. 1797-1801
  • (2011)

Multi-Functional Light Emitter Based on Band-Edge Modes Near $\Gamma$-Point in Honeycomb Photonic Crystal

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Abstract

In this report, we demonstrate multi-functional light emitter based on band-edge modes near $\Gamma$-point in a two-dimensional honeycomb photonic crystal slab. Different band-edge modes near $\Gamma$-point are identified, including the monopole $(\Gamma_{2})$, dipole $(\Gamma _{4, 5})$, and quadrupole $(\Gamma _{6, 7})$ 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.

© 2011 IEEE

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