Temporal broadening of attosecond photoelectron wavepackets from solid surfaces

Okell, William; Witting, Tobias; Fabris, Davide; Arrell, Christopher; Hengster, Julia; Ibrahimkutty, S.; Seiler, A.; Barthelmeß, Miriam; Stankov, S.; Lei, Dangyuan; Sonnefraud, Yannick; Rahmani, Mohsen; Uphues, Thorsten; Maier, Stefan A.; Marangos, J. P.; Tisch, J. W. G.

doi:10.1364/optica.2.000383

Cited by 27 publications

(21 citation statements)

References 33 publications

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“…This yields an additional delay, since the normal field component is screened over very short depths (in the range 0–0.3 nm for Mg (ref. 31 )) at the surface, meaning that photoemitted electrons do not experience the streaking field until they reach the surface—which typically takes on the order of tens to hundreds of attoseconds 30 32 33 34 . In our case, however, photoelectrons from the nanotaper probe the electric field component parallel to the surface.…”

Section: Discussionmentioning

confidence: 99%

Attosecond nanoscale near-field sampling

et al. 2016

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The promise of ultrafast light-field-driven electronic nanocircuits has stimulated the development of the new research field of attosecond nanophysics. An essential prerequisite for advancing this new area is the ability to characterize optical near fields from light interaction with nanostructures, with sub-cycle resolution. Here we experimentally demonstrate attosecond near-field retrieval for a tapered gold nanowire. By comparison of the results to those obtained from noble gas experiments and trajectory simulations, the spectral response of the nanotaper near field arising from laser excitation can be extracted.

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Section: Discussionmentioning

confidence: 99%

Attosecond nanoscale near-field sampling

et al. 2016

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“…The developed classical model is basic and versatile. It can be transferred to different geometries, such as surfaces [40,41], nanowires [42], nanotips [43], and metal and semiconductor nanostructures [11,44].…”

Section: Discussionmentioning

confidence: 99%

Characterization of induced nanoplasmonic fields in time-resolved photoemission: A classical trajectory approach applied to gold nanospheres

Saydanzad

Thumm

2017

Phys. Rev. A

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Attosecond time-resolved spectroscopy has been shown to be a powerful method for investigating the electronic dynamics in atoms, and this technique is now being transferred to the investigation of elastic and inelastic scattering during electron transport and collective electronic (plasmonic) effects in solids. By sampling over classical photoelectron trajectories, we simulated streaked photoelectron energy spectra as a function of the time delay between ionizing isolated attosecond extreme ultraviolet (XUV) pulses and assisting infrared or visible streaking laser pulses. Our calculations comprise a sequence of four steps: XUV excitation, electron transport in matter, escape from the surface, and propagation to the photoelectron detector. Based on numerical applications to gold nanospheres of 5 and 50 nm radius, we investigate streaked photoemission spectra with regard to (i) the nanoparticle's dielectric response to the electric field of the streaking laser pulse, (ii) relative contributions of photoelectron release from different locations on the surface and inside the nanoparticle, (iii) contributions of photoemission from the Fermi level only versus emission from the entire occupied conduction band, and (iv) their fidelity in imaging the spatio-temporal distribution of the induced plasmonic field near the particle's surface.

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“…Relative delays in the same range were found in subsequent streaking experiments from Mg(0001) 118,119 and Au and WO 3. 120 …”

Section: Photoemission From Surfacesmentioning

confidence: 99%

Photoemission and photoionization time delays and rates

Gallmann

Jordan

Wörner

et al. 2017

Structural Dynamics

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Ionization and, in particular, ionization through the interaction with light play an important role in fundamental processes in physics, chemistry, and biology. In recent years, we have seen tremendous advances in our ability to measure the dynamics of photo-induced ionization in various systems in the gas, liquid, or solid phase. In this review, we will define the parameters used for quantifying these dynamics. We give a brief overview of some of the most important ionization processes and how to resolve the associated time delays and rates. With regard to time delays, we ask the question: how long does it take to remove an electron from an atom, molecule, or solid? With regard to rates, we ask the question: how many electrons are emitted in a given unit of time? We present state-of-the-art results on ionization and photoemission time delays and rates. Our review starts with the simplest physical systems: the attosecond dynamics of single-photon and tunnel ionization of atoms in the gas phase. We then extend the discussion to molecular gases and ionization of liquid targets. Finally, we present the measurements of ionization delays in femto- and attosecond photoemission from the solid–vacuum interface.

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Temporal broadening of attosecond photoelectron wavepackets from solid surfaces

Cited by 27 publications

References 33 publications

Attosecond nanoscale near-field sampling

Attosecond nanoscale near-field sampling

Characterization of induced nanoplasmonic fields in time-resolved photoemission: A classical trajectory approach applied to gold nanospheres

Photoemission and photoionization time delays and rates

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