High-order-harmonic generation in gas with a flat-top laser beam

Boutu, Willem; Auguste, T.; Boyko, Olga; Sola, Íñigo J.; Balcou, Ph.; Binazon, L.; Gobert, O.; Merdji, H.; Valentin, C.; Constant, Éric; Mével, E.; Carré, B.

doi:10.1103/physreva.84.063406

Cited by 37 publications

(29 citation statements)

References 45 publications

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“…One SYLOS-driven beamline (GHHG SYLOS LONG) will employ an extremely loose focusing scheme, and will be coupled with a long interaction cell and very low gas pressures. This combination obeys geometrical scaling predictions and pressure related phase matching considerations governing GHHG in extended media [23][24][25]. The other SYLOS-driven beamline (GHHG SYLOS COMPACT) will also rely on loose focusing, but will utilize a high-pressure medium where phase matching is ensured by the short interaction length [26].…”

Section: Introductionmentioning

confidence: 99%

The ELI-ALPS facility: the next generation of attosecond sources

Kühn

Dumergue

Kahaly

et al. 2017

J. Phys. B: At. Mol. Opt. Phys.

163

100

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This review presents the technological infrastructure that will be available at the Extreme Light Infrastructure Attosecond Light Pulse Source (ELI-ALPS) international facility. ELI-ALPS will offer to the international scientific community ultrashort pulses in the femtosecond and attosecond domain for time-resolved investigations with unprecedented levels of high quality characteristics. The laser sources and the attosecond beamlines available at the facility will make attosecond technology accessible for scientists lacking access to these novel tools. Time-resolved

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Section: Introductionmentioning

confidence: 99%

The ELI-ALPS facility: the next generation of attosecond sources

Kühn

Dumergue

Kahaly

et al. 2017

J. Phys. B: At. Mol. Opt. Phys.

163

100

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“…This analysis has been extremely successful for understanding spatio-spectral structures of the emitted harmonics driven by a single beam [36,37], and drives the design of efficient generating schemes (see e.g. [38][39][40][41][42][43]). Of particular interest are maps of the modulus of ∆ k + XU V , which inform us about the dominant generating regions of the gas target, while the direction of k q determines the emission direction.…”

Section: Structure Of a Two Beam Focusmentioning

confidence: 99%

High-order harmonic generation in an active grating

et al. 2019

Self Cite

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We study theoretically and experimentally High Harmonic Generation (HHG) using two non collinear driving fields focused in gases. We show that these two fields form a non stationary blazed active grating in the generation medium. The intensity and phase structure of this grating rule the far field properties of the emission, such as the relative amplitude of the diffraction orders. Full macroscopic calculations and experiments support this general analysis. This insight into the HHG process allows us to envision new structuration schemes to convert femtosecond lasers to attosecond pulses with increased efficiency.

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“…In this way, it has been reported that some non-ideal focusing schemes improve the results in applications. For example, in the case of flat-top focal distributions in HHG [1], spatio-temporal couplings (e.g., with transversal spatial chirp to create attosecond lighthouses [2], angular chirp for angle-dependent emission of HHG [3], space-time focusing for microprocessing [4], or to control light velocity [5]). Also, beam aberrations are used to enhance nonlinear confocal microscopy [6], the filamentation process [7], or to generate a uniform ellipsoidal particle distribution [8].…”

Section: Introductionmentioning

confidence: 99%

Tailoring the spatio-temporal distribution of diffractive focused ultrashort pulses through pulse shaping

Alonso¹,

Pérez-Vizcaíno²,

Mínguez‐Vega³

et al. 2018

Opt. Express

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Focusing control of ultrashort pulsed beams is an important research topic, due to its impact to subsequent interaction with matter. In this work, we study the propagation near the focus of ultrashort laser pulses of ~25 fs duration under diffractive focusing. We perform the spatio-spectral and spatio-temporal measurements of their amplitude and phase, complemented by the corresponding simulations. With them, we demonstrate that pulse shaping allows modifying in a controlled way not only the spatio-temporal distribution of the light irradiance in the focal region, but also the way it propagates as well as the frequency distribution within the pulse (temporal chirp). To gain a further intuitive insight, the role of diverse added spectral phase components is analyzed, showing the symmetries that arise for each case. In particular, we compare the effects, similarities and differences of the second and third order dispersion cases.

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High-order-harmonic generation in gas with a flat-top laser beam

Cited by 37 publications

References 45 publications

The ELI-ALPS facility: the next generation of attosecond sources

The ELI-ALPS facility: the next generation of attosecond sources

High-order harmonic generation in an active grating

Tailoring the spatio-temporal distribution of diffractive focused ultrashort pulses through pulse shaping

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