Single-pulse terahertz spectroscopy monitoring sub-millisecond time dynamics at a rate of 50 kHz
Abstract Slow motion movies allow us to see intricate details of the mechanical dynamics of complex phenomena. If the images in each frame are replaced by terahertz (THz) waves, such movies can monitor low-energy resonances and reveal fast structural or chemical transitions. Here, we combine THz spe...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-05-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-38354-3 |
| _version_ | 1797832002721808384 |
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| author | Nicolas Couture Wei Cui Markus Lippl Rachel Ostic Défi Junior Jubgang Fandio Eeswar Kumar Yalavarthi Aswin Vishnuradhan Angela Gamouras Nicolas Y. Joly Jean-Michel Ménard |
| author_facet | Nicolas Couture Wei Cui Markus Lippl Rachel Ostic Défi Junior Jubgang Fandio Eeswar Kumar Yalavarthi Aswin Vishnuradhan Angela Gamouras Nicolas Y. Joly Jean-Michel Ménard |
| author_sort | Nicolas Couture |
| collection | DOAJ |
| description | Abstract Slow motion movies allow us to see intricate details of the mechanical dynamics of complex phenomena. If the images in each frame are replaced by terahertz (THz) waves, such movies can monitor low-energy resonances and reveal fast structural or chemical transitions. Here, we combine THz spectroscopy as a non-invasive optical probe with a real-time monitoring technique to demonstrate the ability to resolve non-reproducible phenomena at 50k frames per second, extracting each of the generated THz waveforms every 20 μs. The concept, based on a photonic time-stretch technique to achieve unprecedented data acquisition speeds, is demonstrated by monitoring sub-millisecond dynamics of hot carriers injected in silicon by successive resonant pulses as a saturation density is established. Our experimental configuration will play a crucial role in revealing fast irreversible physical and chemical processes at THz frequencies with microsecond resolution to enable new applications in fundamental research as well as in industry. |
| first_indexed | 2024-04-09T14:00:45Z |
| format | Article |
| id | doaj.art-13183dada833417492243626877857f3 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-04-09T14:00:45Z |
| publishDate | 2023-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-13183dada833417492243626877857f32023-05-07T11:18:06ZengNature PortfolioNature Communications2041-17232023-05-011411710.1038/s41467-023-38354-3Single-pulse terahertz spectroscopy monitoring sub-millisecond time dynamics at a rate of 50 kHzNicolas Couture0Wei Cui1Markus Lippl2Rachel Ostic3Défi Junior Jubgang Fandio4Eeswar Kumar Yalavarthi5Aswin Vishnuradhan6Angela Gamouras7Nicolas Y. Joly8Jean-Michel Ménard9Department of Physics, University of OttawaDepartment of Physics, University of OttawaMax Planck Institute for the Science of LightDepartment of Physics, University of OttawaDepartment of Physics, University of OttawaDepartment of Physics, University of OttawaDepartment of Physics, University of OttawaDepartment of Physics, University of OttawaDepartment of Physics, University of Erlangen-NürnbergDepartment of Physics, University of OttawaAbstract Slow motion movies allow us to see intricate details of the mechanical dynamics of complex phenomena. If the images in each frame are replaced by terahertz (THz) waves, such movies can monitor low-energy resonances and reveal fast structural or chemical transitions. Here, we combine THz spectroscopy as a non-invasive optical probe with a real-time monitoring technique to demonstrate the ability to resolve non-reproducible phenomena at 50k frames per second, extracting each of the generated THz waveforms every 20 μs. The concept, based on a photonic time-stretch technique to achieve unprecedented data acquisition speeds, is demonstrated by monitoring sub-millisecond dynamics of hot carriers injected in silicon by successive resonant pulses as a saturation density is established. Our experimental configuration will play a crucial role in revealing fast irreversible physical and chemical processes at THz frequencies with microsecond resolution to enable new applications in fundamental research as well as in industry.https://doi.org/10.1038/s41467-023-38354-3 |
| spellingShingle | Nicolas Couture Wei Cui Markus Lippl Rachel Ostic Défi Junior Jubgang Fandio Eeswar Kumar Yalavarthi Aswin Vishnuradhan Angela Gamouras Nicolas Y. Joly Jean-Michel Ménard Single-pulse terahertz spectroscopy monitoring sub-millisecond time dynamics at a rate of 50 kHz Nature Communications |
| title | Single-pulse terahertz spectroscopy monitoring sub-millisecond time dynamics at a rate of 50 kHz |
| title_full | Single-pulse terahertz spectroscopy monitoring sub-millisecond time dynamics at a rate of 50 kHz |
| title_fullStr | Single-pulse terahertz spectroscopy monitoring sub-millisecond time dynamics at a rate of 50 kHz |
| title_full_unstemmed | Single-pulse terahertz spectroscopy monitoring sub-millisecond time dynamics at a rate of 50 kHz |
| title_short | Single-pulse terahertz spectroscopy monitoring sub-millisecond time dynamics at a rate of 50 kHz |
| title_sort | single pulse terahertz spectroscopy monitoring sub millisecond time dynamics at a rate of 50 khz |
| url | https://doi.org/10.1038/s41467-023-38354-3 |
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