Topological Protection in Radiative Photonic Crystal Cavities
- Resource Type
- Conference
- Authors
- Barczyk, R.; Parappurath, N.; Arora, S.; Bauer, T.; Kuipers, L.; Verhagen, E.
- Source
- 2022 Sixteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Artificial Materials for Novel Wave Phenomena (Metamaterials), 2022 Sixteenth International Congress on. :X-055-X-057 Sep, 2022
- Subject
- Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Optical losses
Q-factor
Shape
Photonic crystals
Optical imaging
Robustness
Metamaterials
- Language
We study the signatures of topological light confinement in the leakage radiation of two-dimensional topological photonic crystal cavities that feature the quantum spin Hall effect at telecom wavelengths. The mode profiles in real and momentum space are retrieved using far field imaging and Fourier spectropolarimetry. We examine the scaling behavior of mode spectra, observe band-inversion-induced confinement, and demonstrate hallmarks of topological protection in the loss rates, which are largely unaffected by cavity shape and size.