Enabling single-mode behavior over large areas with photonic Dirac cones.

Area of Science:

• Photonics
• Condensed Matter Physics
• Materials Science

Background:

• Graphene's electronic properties stem from its Dirac-like energy spectrum.
• Photonic analogs of graphene with Dirac dispersion are sought for novel research.
• Existing photonic Dirac systems lack omnidirectional out-of-plane light confinement.

Purpose of the Study:

• To report a novel route for creating all-dielectric 3D photonic materials with Dirac-like dispersion.
• To demonstrate a quasi-two-dimensional system exhibiting Dirac dispersion.
• To explore the enhancement of spontaneous emission coupling efficiency (β-factor) in these systems.

Main Methods:

• Fabrication of all-dielectric three-dimensional photonic materials.
• Characterization of Dirac-like dispersion in a quasi-two-dimensional system.
• Theoretical analysis of light confinement and spontaneous emission properties.

Main Results:

• Successful creation of 3D photonic materials with Dirac-like dispersion.
• Achieved fully omnidirectional out-of-plane light confinement.
• Demonstrated potential for dramatic enhancement of the β-factor over large areas.

Conclusions:

• The developed photonic system overcomes limitations of previous Dirac analog designs.
• This work enables large-area ultralow-threshold lasers and efficient single-photon sources.
• Potential applications include quantum information processing and energy harvesting systems.