Hard X-ray transient grating spectroscopy on bismuth germanate
Optical-domain transient grating (TG) spectroscopy is a versatile background-free four-wave-mixing technique that is used to probe vibrational, magnetic and electronic degrees of freedom in the time domain1. The newly developed coherent X-ray free-electron laser sources allow its extension to the X-...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2022
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| Online Access: | https://hdl.handle.net/1721.1/141158 |
| _version_ | 1826200287490080768 |
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| author | Nelson, Keith Maznev, Alexei |
| author_facet | Nelson, Keith Maznev, Alexei |
| author_sort | Nelson, Keith |
| collection | MIT |
| description | Optical-domain transient grating (TG) spectroscopy is a versatile background-free four-wave-mixing technique that is used to probe vibrational, magnetic and electronic degrees of freedom in the time domain1. The newly developed coherent X-ray free-electron laser sources allow its extension to the X-ray regime. X-rays offer multiple advantages for TG: their large penetration depth allows probing the bulk properties of materials, their element specificity can address core excited states, and their short wavelengths create excitation gratings with unprecedented momentum transfer and spatial resolution. Here, we demonstrate TG excitation in the hard X-ray range at 7.1 keV. In bismuth germanate (BGO), the non-resonant TG excitation generates coherent optical phonons detected as a function of time by diffraction of an optical probe pulse. This experiment demonstrates the ability to probe bulk properties of materials and paves the way for ultrafast coherent four-wave-mixing techniques using X-ray probes and involving nanoscale TG spatial periods. |
| first_indexed | 2024-09-23T11:34:10Z |
| format | Article |
| id | mit-1721.1/141158 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:34:10Z |
| publishDate | 2022 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1411582022-03-15T03:25:30Z Hard X-ray transient grating spectroscopy on bismuth germanate Nelson, Keith Maznev, Alexei Optical-domain transient grating (TG) spectroscopy is a versatile background-free four-wave-mixing technique that is used to probe vibrational, magnetic and electronic degrees of freedom in the time domain1. The newly developed coherent X-ray free-electron laser sources allow its extension to the X-ray regime. X-rays offer multiple advantages for TG: their large penetration depth allows probing the bulk properties of materials, their element specificity can address core excited states, and their short wavelengths create excitation gratings with unprecedented momentum transfer and spatial resolution. Here, we demonstrate TG excitation in the hard X-ray range at 7.1 keV. In bismuth germanate (BGO), the non-resonant TG excitation generates coherent optical phonons detected as a function of time by diffraction of an optical probe pulse. This experiment demonstrates the ability to probe bulk properties of materials and paves the way for ultrafast coherent four-wave-mixing techniques using X-ray probes and involving nanoscale TG spatial periods. 2022-03-14T17:09:32Z 2022-03-14T17:09:32Z 2021-04-22 2022-03-14T17:03:56Z Article http://purl.org/eprint/type/JournalArticle 1749-4893 1749-4885 https://hdl.handle.net/1721.1/141158 Rouxel, J.R., Fainozzi, D., Mankowsky, R. et al. Hard X-ray transient grating spectroscopy on bismuth germanate. Nat. Photon. 15, 499–503 (2021) en 10.1038/S41566-021-00797-9 Nature Photonics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Springer Science and Business Media LLC arXiv |
| spellingShingle | Nelson, Keith Maznev, Alexei Hard X-ray transient grating spectroscopy on bismuth germanate |
| title | Hard X-ray transient grating spectroscopy on bismuth germanate |
| title_full | Hard X-ray transient grating spectroscopy on bismuth germanate |
| title_fullStr | Hard X-ray transient grating spectroscopy on bismuth germanate |
| title_full_unstemmed | Hard X-ray transient grating spectroscopy on bismuth germanate |
| title_short | Hard X-ray transient grating spectroscopy on bismuth germanate |
| title_sort | hard x ray transient grating spectroscopy on bismuth germanate |
| url | https://hdl.handle.net/1721.1/141158 |
| work_keys_str_mv | AT nelsonkeith hardxraytransientgratingspectroscopyonbismuthgermanate AT maznevalexei hardxraytransientgratingspectroscopyonbismuthgermanate |