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Journal Articles Laser & Photonics Reviews Year : 2008

Photon confinement in photonic crystal nanocavities


The quest for enhanced light-matter interactions has enabled a tremendous increase in the performance of photonic-crystal nanoresonators in the past decade. tate-of-the-art nanocavities now offer mode lifetime in the nanosecond range with confinement volumes of a few hundredths of a cubic micrometer. These results are certainly a consequence of the rapid development of fabrication techniques and modeling tools at micro- and nanometric scales. For future applications and developments, it is necessary to deeply understand the intrinsic physical quantities that govern the photon confinement in these cavities. We present a review of the different physical mechanisms at work in the photon confinement of almost all modern PhC cavity constructs. The approach relies on a Fabry-Perot picture and emphasizes three intrinsic quantities, the mirror reflectance, the mirror penetration depth and the defect-mode group velocity, which are often hidden by global analysis relying on an a posteriori analysis of the calculated cavity mode. The discussion also includes nanoresonator constructs, such as the important micropillar cavity, for which some subtle scattering mechanisms significantly alter the Fabry-Perot picture.
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hal-00566678 , version 1 (16-02-2011)


  • HAL Id : hal-00566678 , version 1


Philippe Lalanne, Christophe Sauvan, Jean-Paul Hugonin. Photon confinement in photonic crystal nanocavities. Laser & Photonics Reviews, 2008, 2 (6), pp.514-526. ⟨hal-00566678⟩
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