High-Q silicon photonic crystal cavity for enhanced optical nonlinearities

Abstract

We fabricate and experimentally characterize a $H0$ photonic crystal slab nanocavity with a design optimized for maximal quality factor, $Q=1.7$ million. The cavity, fabricated from a silicon slab, has a resonant mode at $\lambda =1.59\mu \mathrm{m}$ and a measured $Q$-factor of $400,000$. It displays nonlinear effects, including high-contrast optical bistability, at a threshold power among the lowest ever reported for a silicon device. With a theoretical modal volume as small as $V=0.34(\lambda /n{)}^3$, this cavity ranks among those with the highest $Q/V$ ratios ever demonstrated, while having a small footprint suited for integration in photonic circuits.

5 pages, 3 figures

References in corpus (3)

• High Quality factor photonic crystal nanobeam cavities
• Photonic-crystal slabs with a triangular lattice of triangular holes investigated using a guided-mode expansion method
• Optical extinction due to intrinsic structural variations of photonic crystals

Cited by in corpus (15)

• Nonlinear and Quantum Optics with Whispering Gallery Resonators
• The Unconventional Photon Blockade
• Maximizing the quality factor to mode volume ratio for ultra-small photonic crystal cavities
• An all-silicon single-photon source by unconventional photon blockade
• Single photons from dissipation in coupled cavities
• Theory of intrinsic propagation losses in topological edge states of planar photonic crystals
• Temporal coupled-mode theory in nonlinear resonant photonics: From basic principles to contemporary systems with 2D materials, dispersion, loss, and gain
• Gallium nitride L3 photonic crystal cavities with an average quality factor of 16,900 in the near infrared
• Cavity QED Based on Thermal Atoms Interacting with a Photonic Crystal Cavity: A Feasibility Study
• Optimized design of a Silica encapsulated photonic crystal nanobeam cavity for integrated Silicon-based nonlinear and quantum photonics
• Disorder effects on the coupling strength of coupled photonic crystal slab cavities
• Dual-carrier Floquet circulator with time-modulated optical resonators
• Nanophotonic hybridization of narrow atomic cesium resonances and photonic stop gaps of opaline nanostructures
• Improved design and experimental demonstration of ultrahigh-Q C${}_{\text{6}}$-symmetric H1 hexapole photonic crystal nanocavities
• Random acoustic boundary conditions and Weyl's law for Laplace-Beltrami operators on non-smooth boundaries