Extreme Ultraviolet Interferometer Using High-Order Harmonic Generation from Successive Sources

Laban, Dane Edward; Palmer, Adam James; Wallace, William; Gaffney, Naylyn; Notermans, Remy; Clevis, Ttj; Pullen, Michael G.; Jiang, D.; Quiney, Harry M.; Litvinyuk, Igor; Kielpinski, David; Sang, R. T.

doi:10.1103/physrevlett.109.263902

Cited by 25 publications

(19 citation statements)

References 21 publications

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“…The maximum signal implies the best temporal overlap between the XUV pulse train and the re-colliding electrons in the amplifier jet. Varying the jet distance affects the temporal overlap via the Gouy and atomic phase shift in the focused beam, as described in a recent paper28. We follow the logic of the paper and adapt it to our experimental condition.…”

Section: Resultsmentioning

confidence: 99%

Parametric amplification of attosecond pulse trains at 11 nm

Seres

Landgraf

et al. 2014

Sci Rep

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We report the first experimental demonstration of the parametric amplification of attosecond pulse trains at around 11 nm. The helium amplifier is driven by intense laser pulses and seeded by high-order harmonics pulses generated in a neon gas jet. Our measurements suggest that amplification takes place only if the seed pulse-trains are perfectly synchronized in time with the driving laser field in the amplifier. Varying the delay, we estimate the durations of the individual extreme ultraviolet pulses within the train to be on the order of 0.2 fs. Our results demonstrate that strong-field parametric amplification can be a suitable tool to amplify weak attosecond pulses from non-destructive pump-probe experiments and it is an important step towards designing amplifiers for realization of energetic XUV pulses with sub-femtosecond duration using compact lasers fitting in university laboratories.

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Section: Resultsmentioning

confidence: 99%

Parametric amplification of attosecond pulse trains at 11 nm

Seres

Landgraf

et al. 2014

Sci Rep

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“…At this position, the generated XUV energy for Xe and Ar gas was ≈ 230 and 130 μJ per pulse, respectively. The reduction of the energy around z ≈ 0 is attributed to phase-mismatch effects induced due to the increase of the medium pressure and/or medium length, while the oscillations observed at z > +5 cm and z < −5 cm are due to the Gouy phase shift of the focused IR beam [30].…”

Section: Pulse Energy and Conversion Efficiency Of The Xuv Sourcementioning

confidence: 96%

Multiple ionization of argon via multi-XUV-photon absorption induced by 20-GW high-order harmonic laser pulses

et al. 2018

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We report the observation of multiple ionization of argon through multi-XUV-photon absorption induced by an unprecedentedly powerful laser driven high-order harmonic generation source. Comparing the measured intensity dependence of the yield of the different argon charge states with numerical calculations we can infer the different channels-direct and sequential-underlying the interaction. While such studies were feasible so far only with free electron laser (FEL) sources, this paper connects highly nonlinear XUV processes with the ultrashort time scales inherent to the harmonic pulses and highlights the advanced perspectives of emerging large scale laser research infrastructures.

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“…4(d) performed under similar conditions. In the measurement the delay was applied by scanning the distance between the two gas jets [25,28], so that in Fig. 4 a change of π rad corresponds to a scan of ≈40 mm.…”

Section: Simulation Of the Xuv Pulse Propagation In The Amplifier Jetmentioning

confidence: 99%

Avalanche of stimulated forward scattering in high harmonic generation

et al. 2016

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© 2016 [Optical Society of America]. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.Optical amplifiers in all ranges of the electromagnetic spectrum exhibit an essential characteristic, namely the input signal during the propagation in the amplifier medium is multiplied by the avalanche effect of the stimulated emission to produce exponential growth. We perform a theoretical study motivated and supported by experimental data on a He gas amplifier driven by intense 30-fs-long laser pulses and seeded with attosecond pulse trains generated in a separated Ne gas jet. We demonstrate that the strong-field theory in the frame of high harmonic generation fully supports the appearance of the avalanche effect in the amplification of extreme ultraviolet attosecond pulse trains. We theoretically separate and identify different physical processes taking part in the interaction and we demonstrate that X-ray parametric amplification dominates over others. In particular, we identify strong-field mediated intrapulse X-ray parametric processes as decisive for amplification at the single-atom level. We confirm that the amplification takes place at photon energies where the amplifier is seeded and when the seed pulses are perfectly synchronized with the driving strong field in the amplifier. Furthermore, propagation effects, phase matching and seed synchronization can be exploited to tune the amplified spectral range within the seed bandwidth.Peer ReviewedPostprint (author's final draft

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Extreme Ultraviolet Interferometer Using High-Order Harmonic Generation from Successive Sources

Cited by 25 publications

References 21 publications

Parametric amplification of attosecond pulse trains at 11 nm

Parametric amplification of attosecond pulse trains at 11 nm

Multiple ionization of argon via multi-XUV-photon absorption induced by 20-GW high-order harmonic laser pulses

Avalanche of stimulated forward scattering in high harmonic generation

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