A new type of transient photonic crystals for high-power lasers is presented. The crystal produced by counterpropagating laser beams in plasma. Trapped electrons and electrically forced ions generate a strong density grating. lifetime the determined ballistic motion ions. robustness allows one to manipulate high-intensity pulses. scheme analyzed here 1D Vlasov simulations. Reflection or transmission pulses are predicted particle-in-cell It shown that plasma may act as tunable mirror intense...

Parametric plasma processes received renewed interest in the context of generating ultra-intense and ultra-short laser pulses up to exawatt-zetawatt regime. Both Raman as well Brillouin amplifications seed were proposed. Here, we investigate one-dimensional (1D) backscattering geometry with help numerical simulations. For optimal amplification, scattering is considered so called strong coupling (sc) Special emphasis lies on dependence amplification process finite duration initial pulses....

Ultrashort-pulse laser intensities can reach ${10}^{22}$ W/cm${}^{2}$. In this case the electron motion becomes ultrarelativistic and significant bremsstrahlung occurs. The radiation causes a dissipative effect, which is called reaction. It has been shown in literature that reaction force phase-space contraction when of electrons field considered. effect smaller for propagation direction propagating plane wave compared to counterpropagation. two colliding beams with sufficiently large...

A plasma photonic crystal consists of a density grating which is created in underdense by counterpropagating laser beams. When high-power pulse impinges the crystal, it might be reflected or transmitted. So far only one type polarization, namely so-called s wave (or TE mode) was investigated (when electric field vector perpendicular to plane incidence). Here, when investigating also p waves TM modes, where magnetic incidence), detected that transmission and reflection properties depend on...

Laser-driven plasma density gratings in underdense are shown to act as photonic crystals for high power lasers. The created by counterpropagating laser beams that trap electrons, followed ballistic ion motion. This leads strong periodic modulations with a lifetime on the order of picoseconds. grating structure is interpreted crystal time-dependent property, e.g., band gap width. In Maxwell–Vlasov and particle-in-cell simulations it demonstrated may frequency filter mirror ultra-short...

Parametric plasma processes received renewed interest in the context of generating ultraintense and ultrashort laser pulses up to exawatt-zetawatt regime. For Brillouin scattering seed pulse amplification at high intensities, strong coupling regime is special interest. The intensity-driven low-frequency modes depend on amplitudes fields. It investigated here how these develop relativistic Then, a unified treatment Raman becomes necessary. Assuming circular polarization, it shown that with...

Ultra-intense and ultra-short laser pulses may be generated up to the exawatt-zetawatt regime due parametric processes in plasmas. The minimization of unwanted plasma leads operational limits which are discussed here with respect filamentation. Transverse filamentation, originally was derived for plane waves, is being investigated seed pulse propagation so called π-pulse limit. A three-dimensional (3D) three-wave-interaction model basis present investigation. To demonstrate applicability...

Raman-seed pulse amplification in a one-dimensional backscattering geometry is investigated with the help of numerical simulations and analytical estimates. The significant dependence initial on form revisited basis three-wave interaction as well kinetic Vlasov model. It shown how short duration input seed influences its subsequent behavior, depending plasma density pump strength. evolution during ``start-up period,'' which has been observed earlier, can be explained analytically. In...

Seed pulse dynamics as well plasma response during Brillouin amplification are investigated in the so called strong coupling regime. Due to finite amplitudes trapping of electrons and ions may become important. These effects not covered by commonly used three-wave interaction equations derived from fluid theory. Therefore, here investigations based on a Vlasov model presented. The kinetic calculations show that density is predicted models. We find pronounced grating with significant particle...

The one-dimensional dynamics of trapped relativistic electromagnetic radiation, which appears during laser plasma interaction, is investigated within a fluid-Maxwell model. modifications density due to fields are considered for linear as well circular polarizations. It shown that standing (V=0) solitons stable on the electron time scale. However, stability region does not agree with prediction from Vakhitov-Kolokolov criterion. Ions always drive unstable, irrespective polarization. moving...

Based on a relativistic Maxwell-fluid description, the existence of ultrarelativistic laser-induced periodic waves in an electron-ion plasma is investigated. Within one-dimensional propagation geometry nonlinear coupling electromagnetic and electrostatic components occurs that makes fourth-order problem nonintegrable. A Hamiltonian description derived, manifolds solutions are studied by Poincar\'e section plots. The influence ion motion investigated different intensity regimes. For laser...

The two-dimensional dynamics of solitons appearing during relativistic laser-plasma interaction is investigated. analysis starts from known soliton models in one space-dimension (1D). Some the solutions are already unstable 1D, and all suffer transverse instability two dimensions (2D). most modes calculated. They give a hint to 2D structures which appear because transversal effects. linear stability considerations supplemented by full nonlinear simulations.

A well-known no-energy-gain theorem states that an electron cannot gain energy when being overrun by a plane (transverse) laser pulse of finite length. The is based on symmetries which are broken radiation reaction (RR) included. It shown here electron, e.g., initially at rest, will positive velocity component in the propagation direction after intense (of duration and with intensity order 5×10(22) W/cm(2) or larger). increment due to RR effects. latter incorporated Landau-Lifshitz form....

The existence and properties of a transient plasma photonic crystal (TPPC) in the region large pump intensities and/or low densities are investigated. A crossover from collective reaction electrons to single particle motion is observed when increasing or considering (extremely) underdense plasmas. For amplitudes, individual may begin bounce ponderomotive wells, causing periodic bunching which bears strong resemblance superfluorescence (superradiance). regions TPPC that trapping regime...

Seed amplification via Brillouin backscattering of a long pump pulse is considered. Similar to Raman amplification, several obstructive effects may occur during short-pulse amplification. One the spontaneous before interacting with seed. Preforming plasma and/or chirping will reduce unwanted backscattering. Optimized regions for low-loss propagation were proposed already in conjunction seed Hence, influence chirp interaction becomes important and be considered here. Both, linear as well...

Abstract High power lasers have become useful scientific tools, but their large size is determined by low damage-threshold optical media. A more robust and compact medium for amplifying manipulating intense laser pulses plasma. Here we demonstrate, experimentally through simulations, that few-millijoule, ultra-short seed interacting with 3.5-J counter-propagating pump in plasma, stimulate back-scattering of nearly 100 mJ energy high intrinsic efficiency, when detuned from Raman resonance....

The localized wake-field behavior behind a short laser pulse is analyzed numerically as well analytically in one space dimension. A propagating an underdense plasma oscillates amplitude and width. Within certain parameter regime, the variations may be near threshold for generation. During times when width becomes small enough, electrostatic wave-packets are generated. latter have amplitudes relativistic regime. breaking of wave packets investigated. Known criteria wave-breaking generalized...

Seed amplification via Brillouin backscattering of a long pump laser-pulse is considered. The interaction takes place in the so called strong coupling regime. Pump chirping applied to mitigate spontaneous Raman before interacting with seed. regime facilitates stronger exponential growth and narrower seeds compared weak regime, although latter scaling amplitude stronger. Strong achieved when laser exceeds certain threshold. It shown how chirp influences both linear as well nonlinear process....

Beating of a broad laser reference beam with quite general focused object inside plasma volume generates dynamic hologram. Both beams may be moderate intensity. The hologram can read out by an ultraintense main (of similar structure as the beam) producing replica. For latter, intensity in focus become extremely large. As application, possibility read-out Gaussian pulse several 10^{19}W/cm^{2} is shown three-dimensional numerical simulations. Besides focusing possibility, also act mode...

To avoid damage in high-power laser systems, a chirped plasma-based grating is proposed for compressing pulses that have been previously stretched and amplified. This generated through the interaction of pump plasma slab. Particle-in-cell (PIC) simulations demonstrate exists duration sufficient to be utilized final pulse amplification (CPA) stage. The generation quite flexible, as several parameters can adjusted, such density, chirp, length, intensity laser. begin, structure analyzed terms...

Abstract We describe a relativistic semi-Lagrangian scheme for the numerical solution of Vlasov-Maxwell system. The implementation strategy on modern non-unified memory access (NUMA) architecture using OpenMP framework is discussed. demonstrated that close to perfect scaling can be obtained many-core, multi-socket systems. Application this code problem generation high-harmonic laser radiation demonstrated. results are compared particle-in-cell (PIC) simulations, indicating in particular warm...

Short laser pulse amplification via stimulated Brillouin backscattering in plasma is considered. Previous work distinguishes between the weakly and strongly coupled regime treats them separately. It shown here that such a separation not generally applicable because strong weak coupling interaction regimes are entwined with each other. An initially scenario may dynamically transform into coupling. This happens when local seed amplitude grows thus triggers driven response. On other hand,...

In a recent paper, M. R. Edwards, N. J. Fisch, and Mikhailova [Phys. Rev. Lett. 116, 015004 (2016)PRLTAO0031-900710.1103/PhysRevLett.116.015004] reported that in electron-positron plasma stimulated Brillouin scattering is drastically enhanced, while Raman completely absent. However, when theory was compared to particle-in-cell (PIC) simulations, discrepancy by at least factor four appeared. Authors correctly argued the disparity might be due fluid approximation of low-frequency mode. They...

Volume plasma density gratings receive increasing interest since, compared to solid-state optical media, they posses significantly higher damage thresholds. The are produced by counterpropagating laser pulses in underdense plasma. When analyzing their properties, usually assumed be homogeneous space. latter assumption, however, breaks down, especially when the short high-power pump pulses. Then, generically grating an inhomogeneous envelope which results from superposition of envelopes....