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Guiding of visible photons at the ångström thickness limit
- Source :
- Nature nanotechnology. 14(9)
- Publication Year :
- 2019
-
Abstract
- Optical waveguides are vital components of data communication system technologies, but their scaling down to the nanoscale has remained challenging despite advances in nano-optics and nanomaterials. Recently, we theoretically predicted that the ultimate limit of visible photon guiding can be achieved in monolayer-thick transition metal dichalcogenides. Here, we present an experimental demonstration of light guiding in an atomically thick tungsten disulfide membrane patterned as a photonic crystal structure. In this scheme, two-dimensional tungsten disulfide excitonic photoluminescence couples into quasi-guided photonic crystal modes known as resonant-type Wood’s anomalies. These modes propagate via total internal reflection with only a small portion of the light diffracted to the far field. Such light guiding at the ultimate limit provides more possibilities to miniaturize optoelectronic devices and to test fundamental physical concepts. A monolayer WS2 membrane patterned as a photonic crystal sustains guided optical modes that propagate via total internal reflection.
- Subjects :
- Diffraction
Photon
Materials science
Photoluminescence
Tungsten disulfide
Biomedical Engineering
Physics::Optics
Bioengineering
Near and far field
02 engineering and technology
010402 general chemistry
01 natural sciences
chemistry.chemical_compound
Monolayer
General Materials Science
Electrical and Electronic Engineering
Photonic crystal
Total internal reflection
business.industry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
0104 chemical sciences
chemistry
Optoelectronics
0210 nano-technology
business
Subjects
Details
- ISSN :
- 17483395
- Volume :
- 14
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- Nature nanotechnology
- Accession number :
- edsair.doi.dedup.....60249569f6fc577c988791c8f8335ab9