| Download | - View final version: Spectroscopic signatures of plasmonic near‐fields on high‐harmonic emission (PDF, 1.3 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1002/lpor.202300448 |
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| Author | Search for: Jalil, Sohail A.1; Search for: Awan, Kashif M.; Search for: Baxter, Joshua; Search for: Bart, Graeme; Search for: Purschke, David N.1; Search for: Fennel, Thomas; Search for: Villeneuve, David M.1; Search for: Staudte, André1; Search for: Berini, Pierre; Search for: Brabec, Thomas; Search for: Ramunno, Lora; Search for: Vampa, Giulio1ORCID identifier: https://orcid.org/0000-0001-8492-3408 |
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| Affiliation | - National Research Council of Canada. Quantum and Nanotechnologies
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| Funder | Search for: Deutsche Forschungsgemeinschaft |
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| Format | Text, Article |
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| Subject | high-harmonic generation; inhomogeneous near-fields; plasmonic meta-surfaces |
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| Abstract | Intense laser fields can reveal the attosecond and femtosecond response of matter in the emitted photoelectrons and high-harmonic photons. The complementary perspective offered by these two messengers is well explored in gas molecules and, more recently, in bulk solids, where both electron emission and high-order harmonics have been utilized to probe the laser-matter interaction. In nanoscale solids, electron emission provides a wealth of information about the localized and inhomogeneous near fields around the nanoparticles. Here, it is shown experimentally that inhomogeneous fields also affect high-order harmonics. Specifically, the experiment reveals strong indications that the field gradient of a nanoscale plasmonic hotspot found inside a Si crystal induces the emission of even-order high harmonics from the crystal itself. This demonstration extends the complementary electron-photon perspective on attosecond science to nanoscale systems. |
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| Publication date | 2023-10-20 |
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| Publisher | Wiley |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 35ea2618-1228-487c-a72d-b9e1fab9626c |
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| Record created | 2024-05-14 |
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| Record modified | 2024-05-14 |
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