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arXiv · 0910.4111

Demonstration of an air-slot mode-gap confined photonic crystal slab nanocavity with ultrasmall mode volumes

J. Gao·J. F. McMillan·M. -C. Wu·S. Assefa·C. W. Wong
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Abstract

We demonstrate experimentally an air-slot mode-gap photonic crystal cavity with quality factor of 15,000 and modal volume of 0.02 cubic wavelengths, based on the design of an air-slot in a width-modulated line-defect in a photonic crystal slab. The origin of the high Q air-slot cavity mode is the mode-gap effect from the slotted photonic crystal waveguide mode with negative dispersion. The high Q cavities with ultrasmall mode volume are important for applications such as cavity quantum electrodynamics, nonlinear optics and optical sensing.

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J. Gao, J. F. McMillan, M. -C. Wu, S. Assefa, C. W. Wong. 2009-10-21. Demonstration of an air-slot mode-gap confined photonic crystal slab nanocavity with ultrasmall mode volumes. https://doi.org/10.1063/1.3298642

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