Characterization of ultra-intense laser in radiation damping regime using ponderomotive scattering

2022 ◽  
Author(s):  
Amol Holkundkar ◽  
Felix Mackenroth
Keyword(s):  
Laser Pulse ◽  
Electron Bunch ◽  
Input Parameter ◽  
Radiation Reaction ◽  
Quantitative Agreement ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Scattered Electron ◽  
Novel Approach ◽  
Particle Simulations

Abstract We present a novel approach to analyzing phase-space distributions of electrons ponderomotively scattered off an ultra-intense laser pulse and comment on implications for thus conceivable in-situ laser-characterization schemes. To this end, we present fully relativistic test particle simulations of electrons scattered from an ultra-intense, counter-propagating laser pulse. The simulations unveil non-trivial scalings of the scattered electron distribution with the laser intensity, pulse duration, beam waist, and energy of the electron bunch. We quantify the found scalings by means of an analytical expression for the scattering angle of an electron bunch ponderomotively scattered from a counter-propagating, ultra-intense laser pulse, also accounting for radiation reaction (RR) through the Landau-Lifshitz (LL) model. For various laser and bunch parameters, the derived formula is in excellent quantitative agreement with the simulations. We also demonstrate how in the radiation-dominated regime a simple re-scaling of our model's input parameter yields quantitative agreement with numerical simulations based on the LL model.

scholarly journals Determining the duration of an ultra-intense laser pulse directly in its focus

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Felix Mackenroth ◽  
Amol R. Holkundkar
Keyword(s):  
Laser Pulse ◽  
Electron Bunch ◽  
Particle Dynamics ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Static Properties ◽  
Precise Knowledge ◽  
Order Of Magnitude ◽  
Laser Metrology ◽  
Full Intensity

AbstractUltra-intense lasers facilitate studies of matter and particle dynamics at unprecedented electromagnetic field strengths. In order to quantify these studies, precise knowledge of the laser’s spatiotemporal shape is required. Due to material damage, however, conventional metrology devices are inapplicable at highest intensities, limiting laser metrology there to indirect schemes at attenuated intensities. Direct metrology, capable of benchmarking these methods, thus far only provides static properties of short-pulsed lasers with no scheme suggested to extract dynamical laser properties. Most notably, this leaves an ultra-intense laser pulse’s duration in its focus unknown at full intensity. Here we demonstrate how the electromagnetic radiation pattern emitted by an electron bunch with a temporal energy chirp colliding with the laser pulse depends on the laser’s pulse duration. This could eventually facilitate to determine the pulse’s temporal duration directly in its focus at full intensity, in an example case to an accuracy of order 10% for fs-pulses, indicating the possibility of an order-of magnitude estimation of this previously inaccessible parameter.

Energetic electron bunch generation by an intense laser pulse

2006 ◽  
Vol 133 ◽  
pp. 1131-1133
Author(s):  
S. Miyazaki ◽  
K. Sakai ◽  
S. Hasumi ◽  
R. Sonobe ◽  
T. Kikuchi ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electron Bunch ◽  
Energetic Electron ◽  
Intense Laser ◽  
Intense Laser Pulse

scholarly journals Electron Bunch Acceleration by an Intense Laser Pulse with a Plasma Separator

2005 ◽  
Vol 125 (3) ◽  
pp. 247-253 ◽  
Author(s):  
Kei Sakai ◽  
Kouichi Miyauchi ◽  
Shuji Miyazaki ◽  
Qing Kong ◽  
Takashi Kikuchi ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Electron Bunch ◽  
Intense Laser ◽  
Intense Laser Pulse

Reduction of the Coherence Time of an Intense Laser Pulse Propagating through a Plasma

2002 ◽  
Vol 88 (19) ◽  
Author(s):  
J. Fuchs ◽  
C. Labaune ◽  
H. Bandulet ◽  
P. Michel ◽  
S. Depierreux ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Coherence Time ◽  
Intense Laser ◽  
Intense Laser Pulse

scholarly journals Focusing of intense laser pulse by a hollow cone

2010 ◽  
Vol 28 (2) ◽  
pp. 293-298 ◽  
Author(s):  
Wei Yu ◽  
Lihua Cao ◽  
M.Y. Yu ◽  
A.L. Lei ◽  
Z.M. Sheng ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Strong Field ◽  
High Energy ◽  
Plasma Boundary ◽  
High Energy Density ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Hollow Cone ◽  
Conical Channel ◽  
Boundary Plasma

AbstractIt is shown that an intense laser pulse can be focused by a conical channel. This anomalous light focusing can be attributed to a hitherto ignored effect in nonlinear optics, namely that the boundary response depends on the light intensity: the inner cone surface is ionized and the laser pulse is in turn modified by the resulting boundary plasma. The interaction creates a new self-consistently evolving light-plasma boundary, which greatly reduces reflection and enhances forward propagation of the light pulse. The hollow cone can thus be used for attaining extremely high light intensities for applications in strong-field and high energy-density physics and other areas.

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