Strong-field nano-optics

Dombi, Péter; Pápa, Zsuzsanna; Vogelsang, Jan; Yalunin, Sergey V.; Sivis, Murat; Herink, Georg; Schäfer, Sascha; Groß, P.; Ropers, Claus; Lienau, Christoph

doi:10.1103/revmodphys.92.025003

Cited by 183 publications

(133 citation statements)

References 728 publications

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“…The latest advances in laser technology have made it possible to control the CEP of ultrashort laser pulses with high accuracy and using such pulses, many studies have successfully demonstrated ultrafast coherent control of electrons in a wide range of tailored nanostructures 1,2 . In this regime, by coupling a laser pulse of just a few optical cycles in duration to a nanostructure, the electric field is confined at the nanometre scale beyond the diffraction limit of light, and the enhanced field can interrogate lightmatter interactions on a sub-wavelength scale and on an ultrafast timescale.…”

Section: Terahertz Photonicsmentioning

confidence: 99%

Waveform sampling on an atomic scale

Takeda

Katayama

2021

Nat. Photonics

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Section: Terahertz Photonicsmentioning

confidence: 99%

Waveform sampling on an atomic scale

Takeda

Katayama

2021

Nat. Photonics

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“…In the visible to near-infrared spectral range, they have a duration of a few femtoseconds [1], which paved the way to the emergence of attosecond science by enabling the generation of XUV pulses of several tens of attoseconds duration via high-harmonic generation [2,3]. They are the tools of choice [4] for exploring electron dynamics inside atoms, molecules and solids [5][6][7][8][9][10] or in nanostructures [11]. They are necessary for understanding fundamental phenomena like magnetism [12] or charge migration inside molecules [13].…”

Section: Introductionmentioning

confidence: 99%

High-energy few-cycle pulses: post-compression techniques

Nagy

Simon

Veisz

2020

Advances in Physics: X

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Contemporary ultrafast science requires reliable sources of high-energy few-cycle light pulses. Currently two methods are capable of generating such pulses: post compression of short laser pulses and optical parametric chirped-pulse amplification (OPCPA). Here we give a comprehensive overview on the post-compression technology based on optical Kerr-effect or ionization, with particular emphasis on energy and power scaling. Relevant types of post compression techniques are discussed including free propagation in bulk materials, multiple-plate continuum generation, multi-pass cells, filaments, photonic-crystal fibers, hollow-core fibers and self-compression techniques. We provide a short theoretical overview of the physics as well as an in-depth description of existing experimental realizations of post compression, especially those that can provide few-cycle pulse duration with mJ-scale pulse energy. The achieved experimental performances of these methods are compared in terms of important figures of merit such as pulse energy, pulse duration, peak power and average power. We give some perspectives at the end to emphasize the expected future trends of this technology.

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“…Single-cycle LSP generation is accompanied by extreme concentration of the energy both in temporal and spatial domains, which makes it possible to study strong-field phenomena already at low laser energy 31 . Surface plasmons can also be exploited in high harmonic generation required to achieve extreme ultraviolet pulses 32 and in several novel application areas of strong-field nano-optics in the ultrafast regime 33 .…”

mentioning

confidence: 99%

Few-cycle localized plasmon oscillations

Csete

Szenes

Vass

et al. 2020

Sci Rep

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The generation of few-cycle laser pulses proved to be a key enabling technology in strong-field physics and ultrafast science. the question naturally arises whether one can induce few-cycle localized plasmon oscillations in optical near-fields. Here, we perform a comparative study of different plasmonic nanoresonators illuminated by few-cycle pulses. We analyze the number of cycles (noc) of the plasmonic field, the near-field enhancement (NFE) as well as the figure of merit NFE/NOC. The pulse length dependence of these quantities is also investigated. throughout the inspected pulselength interval silica-gold and silica-silver core-shell monomers have the potential to preserve the noc of the incoming pulse, silver bow-ties result in the highest nfe, whereas gold core-shell dimers have the highest NFE/NOC. Based on the analysis, silver bow-ties, gold core-shell and silver nanorod dimers proved to be the most suitable for few-cycle near-field amplification. Few-cycle laser pulses (especially with carrier-envelope phase stabilization) proved to be highly important in many experiments in strong-field physics, attosecond science and pump-probe methods with ultrahigh time resolution. Therefore, the question naturally arises whether one can combine extreme temporal concentration of electromagnetic energy (in the form of few-cycle pulses 1,2) with ultrahigh spatial localization of laser fields readily provided by localized surface plasmon (LSP) resonance. Here, we investigate the possibility of the generation of few-cycle LSPs by analyzing the temporal response of different types of plasmonic nanoparticles and nanoparticle dimers. Plasmonic metal nanorods have already been investigated extensively. They inherently show plasmonic resonances corresponding to their short and long axes. The transversal and longitudinal resonance frequencies depend on the material, axis lengths and aspect ratio of the nanorod. Hence, nanorod LSP resonance can be tuned through wide spectral intervals by changing the geometry 3,4. Dielectric-metal core-shell type nanoresonators offer unique possibility of far-field and near-field control spanning wide spectral intervals via tailoring the plasmon hybridization promoted by two metal-dielectric interfaces 5,6. An interesting possibility is that dipolar resonance can be achieved at the same wavelength in two different generalized aspect ratio (GAR = R inner /R outer) intervals by applying the same core and shell materials 7. The thick (thin) shell composition supports a plasmonic resonance, which is accompanied by a spectrally wide (narrow) scattering cross-section maximum and low (high) absorbance. Although the scattering of core-shell nanoparticles is always lower than that of a homogeneous sphere, the achievable broad bandwidth and the possibility to control the Q factor of the plasmonic resonance by varying the GAR offers the unique possibility of electric field enhancement combined with the preservation of few-cycle transients 8,9. More complex plasmonic structures were also proposed and then u...

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Strong-field nano-optics

Cited by 183 publications

References 728 publications

Waveform sampling on an atomic scale

Waveform sampling on an atomic scale

High-energy few-cycle pulses: post-compression techniques

Few-cycle localized plasmon oscillations

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