Nature Communications (Jul 2020)
Femtosecond exciton dynamics in WSe2 optical waveguides
- Aaron J. Sternbach,
- Simone Latini,
- Sanghoon Chae,
- Hannes Hübener,
- Umberto De Giovannini,
- Yinming Shao,
- Lin Xiong,
- Zhiyuan Sun,
- Norman Shi,
- Peter Kissin,
- Guang-Xin Ni,
- Daniel Rhodes,
- Brian Kim,
- Nanfang Yu,
- Andrew J. Millis,
- Michael M. Fogler,
- Peter J. Schuck,
- Michal Lipson,
- X.-Y. Zhu,
- James Hone,
- Richard D. Averitt,
- Angel Rubio,
- D. N. Basov
Affiliations
- Aaron J. Sternbach
- Department of Physics, Columbia University
- Simone Latini
- Max Planck Institute for the Structure and Dynamics of Matter
- Sanghoon Chae
- Department of Mechanical Engineering, Columbia University
- Hannes Hübener
- Max Planck Institute for the Structure and Dynamics of Matter
- Umberto De Giovannini
- Max Planck Institute for the Structure and Dynamics of Matter
- Yinming Shao
- Department of Physics, Columbia University
- Lin Xiong
- Department of Physics, Columbia University
- Zhiyuan Sun
- Department of Physics, Columbia University
- Norman Shi
- Department of Physics, Columbia University
- Peter Kissin
- Department of Physics, University of California, San Diego
- Guang-Xin Ni
- Department of Physics, Columbia University
- Daniel Rhodes
- Department of Mechanical Engineering, Columbia University
- Brian Kim
- Department of Mechanical Engineering, Columbia University
- Nanfang Yu
- Department of Physics, Columbia University
- Andrew J. Millis
- Department of Physics, Columbia University
- Michael M. Fogler
- Department of Physics, University of California, San Diego
- Peter J. Schuck
- Department of Mechanical Engineering, Columbia University
- Michal Lipson
- Department of Electrical Engineering, Columbia University
- X.-Y. Zhu
- Department of Chemistry, Columbia University
- James Hone
- Department of Mechanical Engineering, Columbia University
- Richard D. Averitt
- Department of Physics, University of California, San Diego
- Angel Rubio
- Max Planck Institute for the Structure and Dynamics of Matter
- D. N. Basov
- Department of Physics, Columbia University
- DOI
- https://doi.org/10.1038/s41467-020-17335-w
- Journal volume & issue
-
Vol. 11,
no. 1
pp. 1 – 6
Abstract
The authors use time-resolved scanning near-field optical microscopy to probe the ultrafast excitonic processes and their impact on waveguide operation in transition metal dichalcogenide crystals. They observe significant modulation of the complex index by monitoring waveguide modes on the fs time scale, and identify both coherent and incoherent manipulations of WSe2 excitonic resonances.
