Generation of vector beams in planar photonic crystal cavities with multiple missing-hole defects

Abstract

We propose a novel method to generate vector beams in planar photonic crystal cavities with multiple missing-hole defects. Simulating the resonant modes in the cavities, we observe that the optical fields in each defect have different phase and polarization state distributions, which promise the compositions of vector beams by the scattered light from the defects. The far-field radiation patterns of the cavity modes calculated via the Sommerfeld diffraction theory present vector beams possessing hollow intensity profiles and polarization singularities. In addition, the extraction efficiencies of the vector beams from the cavities could be improved by modifying the air-holes surrounding the defects. This planar photonic crystal cavity-based vector beam generator may provide useful insights for the on-chip controlling of vector beams in their propagations and interactions with matter.

arXiv comment12 pages, 5 figures

References in corpus (6)

• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Controlling the Spontaneous Emission Rate of Single Quantum Dots in a 2D Photonic Crystal
• Efficient Photonic Crystal Cavity-Waveguide Couplers
• High-brightness single photon source from a quantum dot in a directional-emission nanocavity
• Integrated multi vector vortex beam generator
• Nanophotonic Filters and Integrated Networks in Flexible 2D Polymer Photonic Crystals

Cited by in corpus (1)

• Cylindrical vector resonant modes achieved in planar photonic crystal cavities with enlarged air-holes