VCSEL-Based Phtonics Crystals

Vertical cavity surface emitting lasers (VCSELs) operating in a single spatial mode necessarily incorporate small surface area and thus can emit limited output power (up to a few mW). An interesting approach to achieving high powers while preserving a high degree of spatial coherence is to phase-lock a large number of single mode emitters to form spatially coherent VCSEL arrays. The resulting 2D arrays of cavities can be treated as 2D photonic crystals, and many concepts and tools provided by photonic bands analysis can be then utilized for gaining insight and proposing solutions for efficient mode control. Using Bragg-mirror patterning techniques, we realize VCSEL-based photonic crystal structures and explore their photon mode structure.

Phase-locked VCSEL arrays

  • Mirror-paterned VCSELs
  • Effect of optical disorder
  • Impact of photonic lattice strain


Photonic Crystal Heterostructures

  • Envelope function confinement
  • Coupling of heterostructure ‘islands’
  • Photonic crystal superlattices

Selected publications:

  • M. Orenstein, E. Kapon, N.G. Stoffel, L.T. Florez, J.P. Harbison and J. Wullert,
    “Two-Dimensional Phase-Locked Arrays of Vertical Cavity Semiconductor Lasers by Mirror Reflectivity Patterning”
    Appl. Phys. Lett. 58, 804-806 (1991).
  • H. Pier, E. Kapon and M. Moser,
    “Strain Effects and Phase Transitions in Photonic Resonator Lattices”
    Nature 407, 880-883 (2000).
  • G. Guerrero, D.L. Boiko and E. Kapon,
    “Photonic Crystal Heterostructures Implemented with Vertical-Cavity Surface-Emitting Lasers”
    Opt. Express 12, 4922-4928 (2004).
  • L.D.A. Lundeberg, D.L. Boiko and E. Kapon,
    “Coupled Islands of Photonic Crystal Heterostructures Implemented with Vertical-Cavity Surface-Emitting Lasers”
    Appl. Phys. Lett. 87, 241120 (2005)