Plasmascopy of ultrafast hot charges in solids
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909946170310656 |
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| author | Zimin, Dmitry A. Sen, Raja Qasim, Muhammad Sjakste, Jelena Yakovlev, Vladislav S. |
| author_facet | Zimin, Dmitry A. Sen, Raja Qasim, Muhammad Sjakste, Jelena Yakovlev, Vladislav S. |
| contents | We demonstrate an electric field-resolved approach for probing ultrafast dynamics of photoinjected charges in solids. Direct access to the electric field of few-cycle pulses enables us to measure a broadband response of a medium with associated plasma frequency. We prepare an ensemble of photoinjected hot charge carriers with energies sufficient to trigger impact ionization and establish a framework to measure its dynamics. Our study reveals the first time-resolved observation of the short-lived ultrafast impact ionization in germanium counteracted by trapping of mobile charges at later times. This approach provides a promising route for studying ultrafast many-body physics in photoexcited solids, with predictions from advanced theoretical models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_05582 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Plasmascopy of ultrafast hot charges in solids Zimin, Dmitry A. Sen, Raja Qasim, Muhammad Sjakste, Jelena Yakovlev, Vladislav S. Other Condensed Matter Optics We demonstrate an electric field-resolved approach for probing ultrafast dynamics of photoinjected charges in solids. Direct access to the electric field of few-cycle pulses enables us to measure a broadband response of a medium with associated plasma frequency. We prepare an ensemble of photoinjected hot charge carriers with energies sufficient to trigger impact ionization and establish a framework to measure its dynamics. Our study reveals the first time-resolved observation of the short-lived ultrafast impact ionization in germanium counteracted by trapping of mobile charges at later times. This approach provides a promising route for studying ultrafast many-body physics in photoexcited solids, with predictions from advanced theoretical models. |
| title | Plasmascopy of ultrafast hot charges in solids |
| topic | Other Condensed Matter Optics |
| url | https://arxiv.org/abs/2512.05582 |