Journal article
Observation of Cartesian light propagation through a three-dimensional cavity superlattice in a silicon photonic band gap crystal
Physical review research, Vol.6(4), 043235
12/01/2024
DOI: 10.1103/PhysRevResearch.6.043235
Abstract
We experimentally investigate peculiar light propagation inside a three-dimensional (3D) superlattice of resonant cavities that are confined within a 3D photonic band gap. To this end, we fabricated 3D diamondlike photonic crystals from silicon with a broad 3D band gap in the near-infrared and doped them with a periodic array of point defects. In position-resolved reflectivity and scattering microscopy, we observe narrow spectral features that match well with superlattice bands in band structures computed with the plane-wave expansion. The cavities are coupled in all three dimensions when they are closely spaced (a_{SL}≤3a), and uncoupled when they are further apart. The superlattice bands correspond to light that hops in high-symmetry directions in 3D (“Cartesian light”) that opens applications in 3D photonic networks, 3D Anderson localization of light, and future 3D quantum photonic networks.
Details
- Title: Subtitle
- Observation of Cartesian light propagation through a three-dimensional cavity superlattice in a silicon photonic band gap crystal
- Creators
- Manashee Adhikary - University of TwenteMarek Kozoň - University of TwenteRavitej Uppu - University of TwenteWillem L. Vos - University of Twente
- Resource Type
- Journal article
- Publication Details
- Physical review research, Vol.6(4), 043235
- DOI
- 10.1103/PhysRevResearch.6.043235
- eISSN
- 2643-1564
- Publisher
- American Physical Society
- Grant note
- NWO-Toegepaste en Technische wetenschappen (TTW) Perspectief program: P15-36 TU DelftTU EindhovenASMLDemconLumiledsSchottSignifyTNO
We thank Cornelis Harteveld for expert technical help and crystal nanofabrication, Chris Toebes for help with the setup, and Ad Lagendijk for valuable insights. We thank Arie den Boef, Patrick Tinnemans, Vahid Bastani, Wim Coene, and Scott Middlebrooks from ASML for insightful discussions on data analysis and Bill Barnes (Exeter, COPS) for proposing the notion Cartesian light. W.L.V. dedicates this paper to the memory of Costas Soukoulis, who co-invented the inverse woodpile structure and provided much encouragement over many years. This research is supported by NWO-Toegepaste en Technische wetenschappen (TTW) Perspectief program P15-36 "Free-form scattering optics" (FFSO) in collaboration with TU Delft, TU Eindhoven, and industrial users ASML, Demcon, Lumileds, Schott, Signify, and TNO.
- Language
- English
- Date published
- 12/01/2024
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984757693502771
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