Slow-wave effect and mode-profile matching in Photonic Crystal microcavities

Details Slow-wave effect and mode-profile matching in Photonic Crystal microcavities Slow-wave effect and mode-profile matching in Photonic Crystal microcavities

2005-02-28

arxiv.org/abs/cond-mat/0502664v1

Phys. Rev. B 71, 165118 (2005)

Physics

Condensed Matter

Other Condensed Matter

accepted for publication in Phys. Rev. B, 8 pages, 4 figures

Scientific paper

10.1103/PhysRevB.71.165118

Physical mechanisms involved in the light confinement in photonic crystal slab microcavities are investigated. We first present a full three-dimensional numerical study of these microcavities. Then, to gain physical insight into the confinement mechanisms, we develop a Fabry-Perot model. This model provides accurate predictions and sheds new light on the physics of light confinement. We clearly identify two mechanisms to enhance the Q factor of these microcavities. The first one consists in improving the mode-profile matching at the cavity terminations and the second one in using a slow wave in the cavity.

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