Spectral interferometry with waveform-dependent relativistic high-order harmonics from plasma surfaces

Kormin, Dmitrii; Borot, Antonin; Ma, Guangjin; Dallari, William; Bergues, Boris; Aladi, M.; Földeş, I; Veisz, László

doi:10.1038/s41467-018-07421-5

Cited by 51 publications

(36 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, due to their need for large pump energies of several hundreds of mJ, these systems usually operate only at low repetition rates (10 Hz), which denies proper CEP stabilization. Nonetheless, because of their inherently high temporal contrast, OPCPA-based sources have recently enabled few-cycle-driven relativistic laser-plasma interactions at a 10-Hz repetition rate, demonstrating relativistic surface high-harmonic generation with sub-2cycle 13 and sub-3-cycle 10,14,15 pulses, as well as LWFA with 3-cycle pulses 16 .…”

Section: Introductionmentioning

confidence: 99%

Relativistic-intensity near-single-cycle light waveforms at kHz repetition rate

et al. 2020

View full text Add to dashboard Cite

The development of ultra-intense and ultra-short light sources is currently a subject of intense research driven by the discovery of novel phenomena in the realm of relativistic optics, such as the production of ultrafast energetic particle and radiation beams for applications. It has been a long-standing challenge to unite two hitherto distinct classes of light sources: those achieving relativistic intensity and those with pulse durations approaching a single light cycle. While the former class traditionally involves large-scale amplification chains, the latter class places high demand on the spatiotemporal control of the electromagnetic laser field. Here, we present a light source producing waveformcontrolled 1.5-cycle pulses with a 719 nm central wavelength that can be focused to relativistic intensity at a 1 kHz repetition rate based on nonlinear post-compression in a long hollow-core fiber. The unique capabilities of this source allow us to observe the first experimental indications of light waveform effects in laser wakefield acceleration of relativistic energy electrons.

show abstract

Section: Introductionmentioning

confidence: 99%

Relativistic-intensity near-single-cycle light waveforms at kHz repetition rate

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The derived maximum acceleration is the highest one observed up to now with KrF lasers. We can mention that according to the relativistic oscillating mirror model in the case of high harmonic generation the critical surface may obtain a significantly higher velocity during oscillation, e.g., using a ∼2cycle laser pulse acceleration up to 7 × 10 21 ms −2 was derived as based on spectral interferometry [19]. However in the present case we can speak about directional acceleration of a macroscopic material quantity [3,4].…”

Section: Discussionmentioning

confidence: 80%

Large Spectral Shift of Reflected Radiation From Laser Plasmas Generated by High Contrast KrF Laser Pulses

et al. 2020

Self Cite

View full text Add to dashboard Cite

Increasing absorption up to more than 90% with increasing intensity was observed in boron and gold laser plasmas heated by KrF laser pulses of high, but still non-relativistic, intensity. The pulses of 700 fs duration had a temporal contrast of 12 orders of magnitude; thus, the laser pulse of more than 10 18 Wcm −2 intensity hit the steep surface of the boron and gold targets. Blue shift of the reflected radiation refers to extreme high acceleration resulting in velocities above 5 × 10 5 ms −1. Brunel absorption and ponderomotive effects are shown to play an important role in the observed phenomena.

show abstract

“…Some evidence for the generation of such isolated attosecond pulses have recently been reported, using few-cycle long laser pulses [14][15][16][17] to drive the laser-plasma interaction [18,19]. The short duration of the driving laser pulse, combined with the strong nonlinearity of the generation process, ensures that one attosecond pulse only is produced if the highest harmonic orders are selected-a scheme called intensity gating.…”

Section: Introductionmentioning

confidence: 99%

Techniques to generate intense isolated attosecond pulses from relativistic plasma mirrors

Kallala

Quéré

Vincenti

2020

Phys. Rev. Research

View full text Add to dashboard Cite

Doppler harmonic generation of a high-power laser on a relativistic plasma mirror is a promising path to produce bright attosecond light bursts. However, a major challenge has been to find a way to generate isolated attosecond pulses, better suited to timed-resolved experiments, rather than trains of pulses. A promising technique is the attosecond lighthouse effect, which consists in imprinting different propagation directions to successive attosecond pulses of the train, and then spatially filtering one pulse in the far field. However, in the relativistic regime, plasma mirrors get curved by the radiation pressure of the incident laser and thus focus the generated harmonic beams. This increases the harmonic beam divergence and makes it difficult to separate the attosecond pulses angularly. In this article, we propose two novel techniques readily applicable in experiments to significantly reduce the divergence of Doppler harmonics, and achieve the generation of isolated attosecond pulses from the lighthouse effect without requiring few-cycle laser pulses. Their validity is demonstrated using state-of-the-art simulations, which show that isolated attosecond pulses with 10 TW peak power in the XUV range can be generated with PW-class lasers. These techniques can equally be applied to other generation mechanisms to alleviate the constraints on the duration on the laser pulses needed to generate isolated attosecond pulses.

show abstract

Spectral interferometry with waveform-dependent relativistic high-order harmonics from plasma surfaces

Cited by 51 publications

References 61 publications

Relativistic-intensity near-single-cycle light waveforms at kHz repetition rate

Relativistic-intensity near-single-cycle light waveforms at kHz repetition rate

Large Spectral Shift of Reflected Radiation From Laser Plasmas Generated by High Contrast KrF Laser Pulses

Techniques to generate intense isolated attosecond pulses from relativistic plasma mirrors

Contact Info

Product

Resources

About