Abstract
We demonstrate photonic crystal nanobeam cavities that support both TE- and TM-polarized modes, each with a Q factor greater than one million and a mode volume on the order of the cubic wavelength. We show that these orthogonally polarized modes have a tunable frequency separation and a high nonlinear spatial overlap. We expect these cavities to have a variety of applications in resonance-enhanced nonlinear optics.
Highlights
We demonstrate photonic crystal nanobeam cavities that support both TE- and TM-polarized modes, each with a Quality factor greater than one million and a mode volume on the order of the cubic wavelength
Ultra-high Quality factor (Q) photonic crystal nanocavities, which are capable of storing photons within a cubic-wavelength-scale volume (Vmod), enable enhanced light-matter interactions, and provide an attractive platform for cavity quantum electrodynamics [1, 2] and nonlinear optics [3,4,5,6,7,8,9]
These structures favor transverse-electric-like (TE-like) polarized modes
Summary
We demonstrate photonic crystal nanobeam cavities that support both TE- and TM-polarized modes, each with a Quality factor greater than one million and a mode volume on the order of the cubic wavelength. We show that these orthogonally polarized modes have a tunable frequency separation and a high nonlinear spatial overlap. Ultra-high Quality factor (Q) photonic crystal nanocavities, which are capable of storing photons within a cubic-wavelength-scale volume (Vmod), enable enhanced light-matter interactions, and provide an attractive platform for cavity quantum electrodynamics [1, 2] and nonlinear optics [3,4,5,6,7,8,9].
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