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The response of conduction band electrons to a local, pulse-like external excitation is investigated. The charge density wave packets that emerge as a consequence of the excitation leave the interaction region with a speed close to the…

量子物理 · 物理学 2017-12-06 Istvan Magashegyi , Lorant Zs. Szabo , Peter Foldi

Ultrashort light pulses can selectively excite charges, spins and phonons in materials, providing a powerful approach for manipulating their properties. Here we use femtosecond laser pulses to coherently manipulate the electron and phonon…

We propose a kinetic model of transient nonequilibrium phenomena in metals exposed to ultrashort laser pulses when heated electrons affect the lattice through direct electron-phonon interaction. This model describes the destruction of a…

统计力学 · 物理学 2009-10-31 L. A. Falkovsky , E. G. Mishchenko

In this paper the interaction of ultrashort laser pulses with matter is investigated. The scattering and potential motion of heat carriers, as well as the external force are considered. It is shown that the heat transport is described by…

其他凝聚态物理 · 物理学 2007-05-23 J. Marciak-Kozlowska , M. Kozlowski

In this paper the superheating of electron plasma by femtosecond laser pulses is investigated. With Heaviside thermal equation (Lasers in Engineering, 12, (2002), p.17) the generation of superhot electrons is described. It is shown that in…

凝聚态物理 · 物理学 2007-05-23 J. Marciak-Kozlowska , M. Kozlowski

A comprehensive theory is proposed to describe the propagation and absorption of ultra-intense, short laser pulse through the under-dense plasma. The kinetic aspects of plasma are fully incorporated using extensive particle-in-cell (PIC)…

等离子体物理 · 物理学 2015-12-01 Jam Yazdanpanah , Elnaz Yazdani , Amir Chakhmachi , Elnaz Khalilzadeh

Multi MeV protons \cite{snavely2000intense} and heavier ions are emitted by thin foils irradiated by high-intensity lasers, due to the huge accelerating fields, up to several teraelectronvolt per meter, at sub-picosecond timescale…

We briefly report on some results regarding the impact of very short and intense laser pulses on a cold, low-density plasma initially at rest, and the consequent acceleration of plasma electrons to relativistic energies. Locally and for…

等离子体物理 · 物理学 2019-03-05 Gaetano Fiore

The process of nonlinear electron emission from a metal surface under the action of femtosecond laser pulse with moderate intensity $\sim10^{11}$~W/cm$^2$ is considered. One-dimensional model is formulated, taking into account the advantage…

介观与纳米尺度物理 · 物理学 2016-11-24 P. A. Golovinski , E. A. Mikhin

In this paper laser heating of human cornea is investigated. The new heat transport equation in cornea -hyperbolic Pennes equation is formulated and solved. It is shown that for ultra-short laser pulses the thermal energy propagates with…

综合物理 · 物理学 2012-04-01 J. Marciak-Kozlowska , Miroslaw Kozlowski

The paper examines superradiance in impurity crystals in the field of a coherent phonon wave excited by two ultrashort laser pulses via Raman scattering processes at the moment of preparation of the initial state of an ensemble of emitters.…

光学 · 物理学 2020-03-12 A. P. Saiko

The nonlinear optical dynamics of nano-materials comprised of plasmons interacting with quantum emitters is investigated by a self-consistent model based on the coupled Maxwell-Liouville-von Neumann equations. It is shown that ultra-short…

介观与纳米尺度物理 · 物理学 2013-12-04 Maxim Sukharev , Tamar Seideman , Robert J. Gordon , Adi Salomon , Yehiam Prior

A thin and dense plasma layer is created when a sufficiently strong laser pulse impinges on a solid target. The nonlinearity introduced by the time-dependent electron density leads to the generation of harmonics. The pulse duration of the…

等离子体物理 · 物理学 2009-10-31 D. Bauer , R. R. E. Salomaa , P. Mulser

In the present paper, we propose a complex short pulse equation and a coupled complex short equation to describe ultra-short pulse propagation in optical fibers. They are shown to be integrable due to the existence of Lax pairs and infinite…

可精确求解与可积系统 · 物理学 2015-02-16 Bao-Feng Feng

The interaction Hamiltonian of an electron and a quasi-monochromatic pulse of a strong quantized electromagnetic field is examined. Canonical transformations of the field variables are found that allow the division of the system's…

量子物理 · 物理学 2015-06-17 O. D. Skoromnik , I. D. Feranchuk

In this paper the heat waves, induced by ultra-short laser pulses are considered. The hyperbolic heat transport in n-dimensional space-time is formulated and solved. It is shown that only for n-odd for heat waves the Huygens principle is…

其他凝聚态物理 · 物理学 2007-05-23 J. Marciak-Kozlowska , M. Kozlowski

The theory of the ultrashort laser pulse scattered by metallic nanoparticles in the region of surface plasmon resonances is developed in the framework of kinetic approach. For the spheroidal particles, the dependence of the light scattering…

介观与纳米尺度物理 · 物理学 2014-12-03 Petro M. Tomchuk , Danylo V. Butenko

The influence of laser frequency on laser-driven ion acceleration is investigated by means of two-dimensional particle-in-cell simulations. When ultrashort intense laser pulse at higher harmonic frequency irradiates a thin solid foil, the…

等离子体物理 · 物理学 2014-07-29 Jan Psikal , Ondrej Klimo , Stefan Weber , Daniele Margarone

In this paper the quantum Cattaneo wave equation for ultra-short laser pulses interaction with medium is obtained . The explicit formulae for electron and nucleon gases are presented

综合物理 · 物理学 2011-10-24 J Marciak-Kozlowska , Miroslaw Kozlowski

We review recent PIC simulation results which show that double-sided irradiaton of a thin overdense plasma slab by ultra-intense laser pulses from both sides can lead to sustained comoving acceleration of surface electrons to energies much…

天体物理学 · 物理学 2010-12-13 E. Liang
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