Different time scales in plasmonically enhanced high-order-harmonic generation

Zagoya, Carlos; Bonner, Matthew; Chomet, H.; Slade, Emma; Faria, C. Figueira de Morisson

doi:10.1103/physreva.93.053419

Cited by 7 publications

(27 citation statements)

References 53 publications

(82 reference statements)

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“…Furthermore, we demonstrate that the quantum orbits have a very different behavior in comparison to the conventional homogeneous field. A recent study supports our initial findings [122].…”

Section: A Spatially (Linear) Nonhomogeneous Fields and Electron Consupporting

confidence: 90%

21st Century Nanoscience – A Handbook

Sattler

2019

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Two emerging areas of research, attosecond and nanoscale physics, have recently started to merge. Attosecond physics deals with phenomena occurring when ultrashort laser pulses, with duration on the femto-and sub-femtosecond time scales, interact with atoms, molecules or solids. The laserinduced electron dynamics occurs natively on a timescale down to a few hundred or even tens of attoseconds (1 attosecond=1 as=10 −18 s), which is of the order of the optical field cycle. For comparison, the revolution of an electron on a 1s orbital of a hydrogen atom is ∼ 152 as. On the other hand, the second topic involves the manipulation and engineering of mesoscopic systems, such as solids, metals and dielectrics, with nanometric precision. Although nano-engineering is a vast and well-established research field on its own, the combination with intense laser physics is relatively recent. We present a comprehensive theoretical overview of the tools to tackle and understand the physics that takes place when short and intense laser pulses interact with nanosystems, such as metallic and dielectric nanostructures. In particular we elucidate how the spatially inhomogeneous laser induced fields at a nanometer scale modify the laser-driven electron dynamics. Consequently, this has important impact on pivotal processes such as above-threshold ionization and high-order harmonic generation. The deep understanding of the coupled dynamics between these spatially inhomogeneous fields and matter configures a promising way to new avenues of research and applications. Thanks to the maturity that attosecond physics has reached, together with the tremendous advance in material engineering and manipulation techniques, the age of atto-nano physics has begun, but it is still in an incipient stage.

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“…Furthermore, we demonstrate that the quantum orbits have a very different behavior in comparison to the conventional homogeneous field. A recent study supports our initial findings [122].…”

Section: A Spatially (Linear) Nonhomogeneous Fields and Electron Consupporting

confidence: 90%

21st Century Nanoscience – A Handbook

Sattler

2019

View full text Add to dashboard Cite

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“…with V eff (x, t) being defined as above and the hats denoting operators. We solve the TSDE in the position 1 The present expression has been corrected by a factor two with regard to that in [82]. However, we have verified that this does not change the main conclusions in the original publication.…”

Section: Time-dependent Schrödinger Equation and Initial Wave Packetmentioning

confidence: 89%

“…Further work explores the extension of the cut-off upon macroscopic propagation [83]. The phase space has also been employed by us in [82] to extract different instantaneous configurations and timescales for HHG in inhomogeneous fields.…”

Section: Rescattering In One-electron Systemsmentioning

confidence: 99%

“…These are used to classify regions with qualitatively different behaviours and understand how processes such tunnelling and rescattering unfold. For details, we refer to the original publications [76,78,82,139]. We also intend to go beyond these articles, by bringing together aspects that have not been emphasised so far.…”

Section: Selected Examplesmentioning

confidence: 99%

“…Still, some groups have explored phase space dynamics in a strong-field context. This includes stabilisation [69][70][71][72], strong-field ionisation [73][74][75][76][77][78], high-order harmonic generation [79][80][81][82][83], laser-induced core dynamics [84,85], rescattering [79,80,[86][87][88][89], nonsequential double ionisation [90][91][92][93][94][95][96][97][98][99][100][101][102][103][104][105][106], or in connection with initial-value representations in strong fields [76,[107][108][109][110]. Furthermore, the growing interest in free-electron lasers (FELs) means that the tools employed in quantum optics are being explored in the X-ray and extreme ultraviolet (XUV) regime [111,112].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Attoscience in phase space

Chomet

Faria

2021

Eur. Phys. J. D

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We provide a brief review of how phase space techniques are explored within strong-field and attosecond science. This includes a broad overview of the existing landscape, with focus on strong-field ionisation and rescattering, high-order harmonic generation, stabilisation and free-electron lasers. Furthermore, using our work on the subject, which deals with ionisation dynamics in atoms and diatomic molecules as well as high-order harmonic generation in inhomogeneous fields, we exemplify how such tools can be employed. One may for instance determine qualitatively different phase space dynamics, explore how bifurcations influence ionisation and high-harmonic generation, establish for which regimes classical and quantum correspondence works or fails, and what role different timescales play. Finally, we conclude the review highlighting the importance of the tools available in quantum optics, quantum information and physical chemistry to strong-field laser–matter interaction. Graphic Abstract

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Attosecond physics at the nanoscale

et al. 2017

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Recently two emerging areas of research, attosecond and nanoscale physics, have started to come together. Attosecond physics deals with phenomena occurring when ultrashort laser pulses, with duration on the femto-and sub-femtosecond time scales, interact with atoms, molecules or solids. The laser-induced electron dynamics occurs natively on a timescale down to a few hundred or even tens of attoseconds (1 attosecond=1 as=10 −18 s), which is comparable with the optical field. For comparison, the revolution of an electron on a 1s orbital of a hydrogen atom is ∼ 152 as. On the other hand, the second branch involves the manipulation and engineering of mesoscopic systems, such as solids, metals and dielectrics, with nanometric precision. Although nano-engineering is a vast and well-established research field on its own, the merger with intense laser physics is relatively recent. In this report on progress we present a comprehensive experimental and theoretical overview of physics that takes place when short and intense laser pulses interact with nanosystems, such as metallic and dielectric nanostructures. In particular we elucidate how the spatially inhomogeneous laser induced fields at a nanometer scale modify the laser-driven electron dynamics. Consequently, this has important impact on pivotal processes such as above-threshold ionization and high-order harmonic generation. The deep understanding of the coupled dynamics between these spatially inhomogeneous fields and matter configures a promising way to new avenues of research and applications. Thanks to the maturity that attosecond physics has reached, together with the tremendous advance in material engineering and manipulation techniques, the age of atto-nano physics has begun, but it is in the initial stage. We present thus some of the open questions, challenges and prospects for experimental confirmation of theoretical predictions, as well as experiments aimed at characterizing the induced fields and the unique electron dynamics initiated by them with high temporal and spatial resolution.

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Different time scales in plasmonically enhanced high-order-harmonic generation

Cited by 7 publications

References 53 publications

21st Century Nanoscience – A Handbook

21st Century Nanoscience – A Handbook

Attoscience in phase space

Attosecond physics at the nanoscale

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