A simple method to find temporal overlap between THz and X-ray pulses using X-ray-induced carrier dynamics in semiconductors
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912671190745088 |
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| author | Kubota, Yuya Suzuki, Takeshi Owada, Shigeki Tamasaku, Kenji Osawa, Hitoshi Togashi, Tadashi Okazaki, Kozo Yabashi, Makina |
| author_facet | Kubota, Yuya Suzuki, Takeshi Owada, Shigeki Tamasaku, Kenji Osawa, Hitoshi Togashi, Tadashi Okazaki, Kozo Yabashi, Makina |
| contents | X-ray-induced carrier dynamics in silicon and gallium arsenide were investigated through intensity variations of transmitted terahertz (THz) pulses in the pico to microsecond time scale with X-ray free-electron laser and synchrotron radiation. We observed a steep reduction in THz transmission with a picosecond scale due to the X-ray-induced carrier generation, followed by a recovery on a nano to microsecond scale caused by the recombination of carriers. The rapid response in the former process is applicable to a direct determination of temporal overlap between THz and X-ray pulses for THz pump-X-ray probe experiments with an accuracy of a few picoseconds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_03206 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A simple method to find temporal overlap between THz and X-ray pulses using X-ray-induced carrier dynamics in semiconductors Kubota, Yuya Suzuki, Takeshi Owada, Shigeki Tamasaku, Kenji Osawa, Hitoshi Togashi, Tadashi Okazaki, Kozo Yabashi, Makina Materials Science X-ray-induced carrier dynamics in silicon and gallium arsenide were investigated through intensity variations of transmitted terahertz (THz) pulses in the pico to microsecond time scale with X-ray free-electron laser and synchrotron radiation. We observed a steep reduction in THz transmission with a picosecond scale due to the X-ray-induced carrier generation, followed by a recovery on a nano to microsecond scale caused by the recombination of carriers. The rapid response in the former process is applicable to a direct determination of temporal overlap between THz and X-ray pulses for THz pump-X-ray probe experiments with an accuracy of a few picoseconds. |
| title | A simple method to find temporal overlap between THz and X-ray pulses using X-ray-induced carrier dynamics in semiconductors |
| topic | Materials Science |
| url | https://arxiv.org/abs/2410.03206 |