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Title: Imaging exciton–polariton transport in MoSe2 waveguides

Journal Article · · Nature Photonics
 [1];  [1];  [2];  [3];  [3]; ORCiD logo [2];  [1]
  1. Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
  2. Univ. of Washington, Seattle, WA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)

Exciton polaritons, which are hybrid modes between photons and excitons in semiconductors, attract broad research interests in both fundamental science and technological applications. Previous studies are focused on far-field spectroscopy of exciton polaritons with cavity or prism coupling. Here we report on real-space nano-optical imaging study of exciton polaritons using the near-field scanning optical microscopy. The observed polaritons are formed by coupling between photons and excitons in thin flakes of group VI transition-metal dichalcogenides and they show sensitive dependence with the flake thickness. The wavelength of these exciton polaritons can reach as low as 300 nm. By tuning the excitation laser energy, we are able to map the entire polariton dispersion both above and below the A exciton energy. Further analysis indicates that polaritons can propagate over many microns below the exciton energy but are subject to strong Landau damping above.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
DE-AC02-07CH11358; AC05-00OR22725
OSTI ID:
1368051
Alternate ID(s):
OSTI ID: 1376529
Report Number(s):
IS-J 9346; nphoton.2017.65
Journal Information:
Nature Photonics, Vol. 11, Issue 6; ISSN 1749-4885
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 139 works
Citation information provided by
Web of Science

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Cited By (39)

A Multibeam Interference Model for Analyzing Complex Near‐Field Images of Polaritons in 2D van der Waals Microstructures journal August 2019
A Simple Method for Synthesis of High-Quality Millimeter-Scale 1T′ Transition-Metal Telluride and Near-Field Nanooptical Properties journal August 2017
Modern Scattering‐Type Scanning Near‐Field Optical Microscopy for Advanced Material Research journal April 2019
Scaling and Reflection Behaviors of Polaritons in Low‐Dimensional Materials journal September 2019
Recent Progress on Exciton Polaritons in Layered Transition‐Metal Dichalcogenides journal September 2019
Nanoimaging and Nanospectroscopy of Polaritons with Time Resolved s ‐SNOM journal September 2019
Revealing Phonon Polaritons in Hexagonal Boron Nitride by Multipulse Peak Force Infrared Microscopy journal November 2019
Polariton Photonics Using Structured Metals and 2D Materials journal October 2019
Probing Polaritons in 2D Materials with Synchrotron Infrared Nanospectroscopy journal December 2019
Probing Polaritons in 2D Materials journal January 2020
Ultrathin WS 2 ‐on‐Glass Photonic Crystal for Self‐Resonant Exciton‐Polaritonics journal February 2020
Edge-emitting polariton laser and amplifier based on a ZnO waveguide journal October 2018
Tomographic and multimodal scattering-type scanning near-field optical microscopy with peak force tapping mode journal May 2018
Transition metal dichalcogenide nanodisks as high-index dielectric Mie nanoresonators journal May 2019
Temperature Dependence of the Dielectric Function of Monolayer MoSe2 journal February 2018
Polariton hyperspectral imaging of two-dimensional semiconductor crystals journal September 2019
Strong light–matter interaction in tungsten disulfide nanotubes journal January 2018
High-efficiency modulation of coupling between different polaritons in an in-plane graphene/hexagonal boron nitride heterostructure journal January 2019
Tin diselenide van der Waals materials as new candidates for mid-infrared waveguide chips journal January 2019
Dipole modelling for a robust description of subdiffractional polariton waves journal January 2019
Two-path self-interference in PTCDA active waveguides maps the dispersion and refraction of a single waveguide mode journal January 2019
Hybrid MoS 2 -gap-mode metasurface photodetectors journal July 2019
Photo-induced charge density distribution in metal surfaces and its extraction with apertureless near-field optics journal April 2019
Large-area synthesis and photoelectric properties of few-layer MoSe 2 on molybdenum foils journal February 2018
Imaging propagative exciton polaritons in atomically thin WSe 2 waveguides journal September 2019
Reflection phase shift of one-dimensional plasmon polaritons in carbon nanotubes journal January 2020
Plasmon-exciton polaritons in two-dimensional semiconductor/metal interfaces journal January 2018
Ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of W S 2 nanotubes journal October 2019
Transport of Neutral Optical Excitations Using Electric Fields journal October 2019
Transient exciton-polariton dynamics in WSe 2 by ultrafast near-field imaging journal February 2019
Mono-crystalline gold platelets: a high-quality platform for surface plasmon polaritons journal February 2020
Transport of Neutral Optical Excitations Using Electric Fields text January 2019
Polariton hyperspectral imaging of two-dimensional semiconductor crystals text January 2019
Transition metal dichalcogenide nanodisks as high-index dielectric Mie nanoresonators text January 2018
Hybrid MoS$_2$-gap-mode metasurfaces photodetectors text January 2019
Reflection Phase Shift of One-dimensional Plasmon Polaritons in Carbon Nanotubes text January 2019
Probing optical anisotropy of nanometer-thin van der waals microcrystals by near-field imaging journal November 2017
Towards Exciton-Polaritons in an Individual MoS2 Nanotube journal February 2020
Edge-emitting polariton laser and amplifier based on a ZnO waveguide text January 2017

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