Effect of transverse magnetic fields on high-harmonic generation in intense laser–solid interaction

Mu, Jie; Li, Fei Yu; Sheng, Zheng-Ming; Zhang, J.

doi:10.1017/s0263034616000446

Cited by 3 publications

(5 citation statements)

References 26 publications

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“…This ensures that the second-harmonic radiation has been generated and travels in both vacuum and plasma mediums. The observation of second and third harmonics in the reflected radiation in the presence of a transverse external magnetic field had been reported in an earlier study by Mu et al (2016). However, in our study, we have observed the harmonic radiations in both reflected and transmitted radiations, as shown in figure 3.…”

Section: Harmonic Generation In O-mode Configuration (E L B 0 )supporting

confidence: 78%

“…The fundamental mechanism of high-order harmonic generation at the vacuum–magnetized plasma interface has been previously studied by Mu et al. (2016). In the present work, we briefly discuss the same extending it for both O- and X-mode configurations of the incident laser pulse.…”

Section: Observations and Discussionmentioning

confidence: 99%

“…In the PIC study reported by Mu et al (2016), they observed second-harmonic generation in the reflected radiation from a solid, dense plasma surface in the presence of an external magnetic field. They explored the harmonic generation efficiency with the variation of external magnetic field and pre-plasma scale length.…”

Section: Introductionmentioning

confidence: 99%

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Harmonic generation in the interaction of laser with a magnetized overdense plasma

et al. 2021

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The mechanism of harmonic generation in both O- and X-mode configurations for a magnetized plasma has been explored here in detail with the help of particle-in-cell simulations. A detailed characterization of both the reflected and transmitted electromagnetic radiation propagating in the bulk of the plasma has been carried out for this purpose. The efficiency of harmonic generation is shown to increase with the incident laser intensity. A dependency of harmonic efficiency has also been found on magnetic field strength. This work demonstrates that there is an optimum value of the magnetic field at which the efficiency of harmonic generation maximizes. The observations are in agreement with theoretical analysis. For the O-mode configuration, this is compelling as the harmonic generation provides for a mechanism by which laser energy can propagate inside an overdense plasma region.

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Section: Harmonic Generation In O-mode Configuration (E L B 0 )supporting

confidence: 78%

Section: Observations and Discussionmentioning

confidence: 99%

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Harmonic generation in the interaction of laser with a magnetized overdense plasma

et al. 2021

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“…Te electron beam accelerated by the wakefeld can generate ultra-short pulses and high-order harmonics [14,15]. Moreover, high-frequency pulses [16] and self-generated magnetic feld can be generated by using ultra-fast electrons to refect the probe light [17].…”

Section: Introductionmentioning

confidence: 99%

Numerical Studies on Bow Waves in Intense Laser-Plasma Interaction

Ning

Fancun

2023

Laser Part. Beams

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Laser-driven wakefield acceleration (LWFA) has attracted lots of attention in recent years. However, few writers have been able to make systematic research into the bow waves generated along with the wake waves. Research about the bow waves will help to improve the understanding about the motion of the electrons near the wake waves. In addition, the relativistic energetic electron density peaks have great potential in electron acceleration and reflecting flying mirrors. In this paper, the bow waves generated in laser-plasma interactions as well as the effects of different laser and plasma parameters are investigated. Multidimensional particle-in-cell simulations are made to present the wake waves and bow waves by showing the electron density and momentum distribution as well as the electric field along x and y directions. The evolution of the bow wave structure is investigated by measuring the open angle between the bow wave and the wake wave cavity. The angle as well as the peak electron density and transverse momentum is demonstrated with respect to different laser intensities, spot sizes, plasma densities, and preplasma lengths. The density peak emits high-order harmonics up to 150 orders and can be a new kind of “flying mirror” to generate higher order harmonics. The study on the bow waves is important for further investigation on the electron motion around the wake waves, generation of dense electron beams, generation of high-order harmonics, and other research and applications based on the bow waves.

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“…It has been found that in the magnetized plasma, sidebands appear in the laser-driven HHG due to the coupling between the figure-8 motion and the cyclotron motion of electrons [29]. Through particle-incell (PIC) simulations by Zhang Jie et al, they found that the parity of HHG can be changed using the transverse magnetic field [30]. Further, Maity et al [31] studied the HHG mechanism in both O-and X-mode configurations.…”

Section: Introductionmentioning

confidence: 99%

The effect of longitudinal static magnetic field on the radiation efficiency of high harmonics from overdense plasma

Wu¹,

Xu²,

Li³

et al. 2023

Plasma Phys. Control. Fusion

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The eﬀect of the magnetic ﬁeld applied along the laser propagation direction on the radiation eﬃciency of high-order harmonics generated from laser-irradiated overdense plasma is investigated theoretically and numerically. We ﬁnd that the external magnetic ﬁeld can increase the transmittance of the overdense target, thereby dramatically enhancing the energy coupling between the laser and target. While for the high-order harmonics of the laser reﬂected from the oscillating target, the radiation eﬃciency reaches the maximum when the cyclotron frequency of the electrons in the magnetized target approaches the laser frequency. This conclusion applies only to overdense plasmas targets. For targets with low reﬂectivity, the application of the magnetic ﬁeld will reduce the harmonic radiation eﬃciency due to the decrease of both the oscillating coherence and opacity of the target. This work provides a reasonable approach to improving the radiation eﬃciency of high-order harmonics and a method to estimate the magnitude of the self-generated magnetic ﬁeld during intense laser-plasma interactions.

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Effect of transverse magnetic fields on high-harmonic generation in intense laser–solid interaction

Cited by 3 publications

References 26 publications

Harmonic generation in the interaction of laser with a magnetized overdense plasma

Harmonic generation in the interaction of laser with a magnetized overdense plasma

Numerical Studies on Bow Waves in Intense Laser-Plasma Interaction

The effect of longitudinal static magnetic field on the radiation efficiency of high harmonics from overdense plasma

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