Femtosecond exciton dynamics in WSe2 optical waveguides
oleh: 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
| Format: | Article |
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| Diterbitkan: | Nature Portfolio 2020-07-01 |
Deskripsi
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.