Imaging exciton-polariton transport in MoSe2 waveguides
arXiv:2301.12980 · doi:10.1038/nphoton.2017.65
Abstract
The exciton polariton (EP), a half-light and half-matter quasiparticle, is potentially an important element for future photonic and quantum technologies. It provides both strong light-matter interactions and long-distance propagation that is necessary for applications associated with energy or information transfer. Recently, strongly-coupled cavity EPs at room temperature have been demonstrated in van der Waals (vdW) materials due to their strongly-bound excitons. Here we report a nano-optical imaging study of waveguide EPs in MoSe2, a prototypical vdW semiconductor. The measured propagation length of the EPs is sensitive to the excitation photon energy and reaches over 12 μm. The polariton wavelength can be conveniently altered from 600 nm down to 300 nm by controlling the waveguide thickness. Furthermore, we found an intriguing mode back-bending dispersion close to the exciton resonance. The observed EPs in vdW semiconductors could be useful in future nanophotonic circuits operating in the near-infrared to visible spectral regions.
21 pages
References in corpus (2)
Cited by in corpus (34)
- Ultrafast imaging of polariton propagation and interactions
- Plasmon-exciton polaritons in 2D semiconductor/metal interfaces
- Collective Excitations in 2D Materials
- Roadmap for Photonics with 2D Materials
- Transition metal dichalcogenide nanospheres for high-refractive-index nanophotonics and biomedical theranostics
- Giant and tunable excitonic optical anisotropy in single-crystal CsPbX halide perovskites
- Gate-tunable emission of exciton-plasmon polaritons in hybrid MoS2-gap-mode metasurfaces
- Phase-locked photon-electron interaction without a laser
- Cryogenic Magneto-Terahertz Scanning Near-field Optical Microscope (cm-SNOM)
- In-plane anisotropy in biaxial ReS2 crystals probed by nano-optical imaging of waveguide modes
- Germanium monosulfide as a natural platform for highly anisotropic THz polaritons
- Exciton Assisted Deeply Subwavelength Nano-Photonics
- Tip-and plasmon-enhanced infrared nanoscopy for ultrasensitive molecular characterizations
- High-refractive index and mechanically cleavable non-van der Waals InGaS3
- Deep learning analysis of polaritonic waves images
- Imaging Anisotropic Waveguide Exciton Polaritons in Tin Sulfide
- Thermal and electrostatic tuning of surface phonon-polaritons in LaAlO3/SrTiO3 heterostructures
- Direct Nano-Imaging of Light-Matter Interactions in Nanoscale Excitonic Emitters
- Plasmonic modes at inclined edges of anisotropic 2D materials
- Impact of graphene on the polarizability of a neighbour nanoparticle: a dyadic Green's function study
- Quantitative near-field characterization of surface plasmon polaritons on monocrystalline gold platelets
- Reflection Phase Shift of One-dimensional Plasmon Polaritons in Carbon Nanotubes
- 2D material exciton-polariton transport on 2D photonic crystals
- Strong coupling of quantum emitters and the exciton polariton in MoS nanodisks
- Exciton Delocalization Suppresses Polariton Scattering
- Fourier analysis of near-field patterns generated by propagating polaritons
- Photoemission electron microscopy of exciton-polaritons in thin WSe waveguides
- Multifrequency Excitation and Detection Scheme in Apertureless Scattering Near Field Scanning Optical Microscopy
- Guiding light with surface exciton-polaritons in atomically thin superlattices
- Artifact Free Transient Near-Field Nanoscopy
- Coupling Dynamics and Linear Polarization Phenomena in Codirectional Polariton Waveguide Couplers
- Ultrafast near-field imaging of exciton-polariton dynamics in WSe_2 waveguides at room temperature
- Strong Interaction of Cherenkov Radiation with Excitons in WSe2 Crystals
- Towards exciton-polaritons in MoS nanotubes