MULTI-fs – A computer code for laser–plasma interaction in the femtosecond regime

Ramis, R.; Eidmann, K.; Meyer‐ter‐Vehn, Jürgen; Hüller, S.

doi:10.1016/j.cpc.2011.10.016

Cited by 79 publications

(51 citation statements)

References 29 publications

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“…For longer prepulse delay, the spectrum of the emitted harmonic progressively shifts towards the blue side. The plasma scale-length set up by an external prepulse, arriving at different time, was estimated by the MULTI-FS hydrodynamic code 29 . This observation further substantiates our interpretation of the pump-probe Doppler measurements ( Fig.…”

Section: Scale-length Dependent Dynamics Of the Pump-critical Surmentioning

confidence: 99%

Controlling femtosecond-laser-driven shock-waves in hot, dense plasma

et al. 2017

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Ultrafast pump-probe reflectometry and Doppler spectrometry of a supercritical density plasma layer excited by 10 17 − 10 18 W/cm 2 intensity, 30 fs, 800 nm laser pulses reveal the interplay of laser intensity contrast and inward shock wave strength. The inward shock wave velocity increases with an increase in laser intensity contrast. This trend is supported by simulations as well as by a separate independent experiment employing an external prepulse to control the inward motion of the shock wave. This kind of cost-effective control of shock wave strength using femtosecond pulses could open up new applications in medicine, science, and engineering.

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Section: Scale-length Dependent Dynamics Of the Pump-critical Surmentioning

confidence: 99%

Controlling femtosecond-laser-driven shock-waves in hot, dense plasma

et al. 2017

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“…The detailed description of the theory and its implementation can be found in Ref (27). The theory is described briefly as follows.…”

Section: Methodsmentioning

confidence: 99%

Hydrodynamic Simulation of the Femtosecond Laser Processing of Metals

Su¹,

Wang²,

Jiang³

2018

dtetr

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The electron-ion collision frequency is a key factor for simulations of the interaction process of ultrashort lasers with metals. In this paper, we propose a semiempirical method based on the Drude-Sommerfeld model for obtaining the electron-ion collision frequency over a wide temperature range, from solid-state to high-temperature plasma. Moreover, we performed a series of hydrodynamic simulations including the modified electron-ion collision frequency. The results indicated that the modified electron-ion collision frequency can exactly describe not only the energy deposits of various femtosecond laser pulses but also the transient properties of electrons on the metal surface. Moreover, a simple function was identified to describe the relationship between laser intensity and peak electron temperature on the surface. This mothed is expected to be beneficial for simulations of the interaction process of femtosecond laser pulses with metals.

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“…26 The MF is a 6.5 µm-thick aluminum foil and the SF is a carbon foil with the thickness ranging from 10 nm to 100 nm. The vacuum gap is set to 30 µm.…”

Section: Plasma Shutter Model and Hydrodynamic Simulationsmentioning

confidence: 99%

Plasma optical shutter in ultraintense laser-foil interaction

et al. 2017

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We report on a plasma optical shutter to reduce the intensity level of nanosecond-duration pedestal of the amplified spontaneous emission (ASE) using an ultrathin foil. The foil is ionized by the ASE prepulse and forms an expanding underdense preplasma, which enables the main laser pulse transmission, leading to an enhancement in temporal contrast. When such a plasma shutter is applied in front of an interested main target, the preplasma profiles are similar to that produced from single-layer reference target irradiated by highcontrast laser and can be finely tuned by varying the shutter thickness. Proton beam with significantly reduced divergence and higher flux density was measured experimentally using the double-foil design. The reduction in beam divergence is a characteristic signature of higher contrast laser production as a combined consequence of less target deformation and flatter sheath-acceleration field, as supported by the two-dimensional (2D) hydrodynamic and particle-in-cell simulations. The plasma shutter holds the promise to enhance the laser contrast and manipulate the preplasma conditions for applications in high-field-physics experiments.

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MULTI-fs – A computer code for laser–plasma interaction in the femtosecond regime

Cited by 79 publications

References 29 publications

Controlling femtosecond-laser-driven shock-waves in hot, dense plasma

Controlling femtosecond-laser-driven shock-waves in hot, dense plasma

Hydrodynamic Simulation of the Femtosecond Laser Processing of Metals

Plasma optical shutter in ultraintense laser-foil interaction

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