scholarly journals Effects of self-generated electric and magnetic fields in laser-generated fast electron propagation in solid materials: Electric inhibition and beam pinching

2001 ◽  
Vol 19 (1) ◽  
pp. 59-65 ◽  
Author(s):  
A. BERNARDINELLO ◽  
D. BATANI ◽  
A. ANTONICCI ◽  
F. PISANI ◽  
M. KOENIG ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Laser Pulses ◽  
Intense Laser ◽  
Relativistic Electrons ◽  
Speed Of Light ◽  
Solid Materials ◽  
Strong Magnetic Fields ◽  
Intense Laser Pulses ◽  
Electric And Magnetic Fields ◽  
Electron Propagation

We present some experimental results which demonstrate the presence of electric inhibition in the propagation of relativistic electrons generated by intense laser pulses, depending on target conductivity. The use of transparent targets and shadowgraphic techniques has made it possible to evidence electron jets moving at the speed of light, an indication of the presence of self-generated strong magnetic fields.

scholarly journals Concept of generation of extremely compressed high-energy electron bunches in several interfering intense laser pulses with tilted amplitude fronts

2012 ◽  
Vol 31 (1) ◽  
pp. 23-28 ◽  
Author(s):  
V.V. Korobkin ◽  
M.Yu. Romanovskiy ◽  
V.A. Trofimov ◽  
O.B. Shiryaev
Keyword(s):  
Laser Pulses ◽  
High Energy ◽  
Intense Laser ◽  
High Energy Electron ◽  
Speed Of Light ◽  
Electron Bunches ◽  
Newton Equation ◽  
High Energies ◽  
Neutral Gas ◽  
Intense Laser Pulses

AbstractA new concept of generating tight bunches of electrons accelerated to high energies is proposed. The electrons are born via ionization of a low-density neutral gas by laser radiation, and the concept is based on the electrons acceleration in traps arising within the pattern of interference of several relativistically intense laser pulses with amplitude fronts tilted relative to their phase fronts. The traps move with the speed of light and (1) collect electrons; (2) compress them to extremely high density in all dimensions, forming electron bunches; and (3) accelerate the resulting bunches to energies of at least several GeV per electron. The simulations of bunch formation employ the Newton equation with the corresponding Lorentz force.

HIGH-ORDER HARMONIC GENERATION IN INTENSE LASER AND MAGNETIC FIELDS

1995 ◽  
Vol 04 (03) ◽  
pp. 533-546 ◽  
Author(s):  
T. ZUO ◽  
A. D. BANDRAUK
Keyword(s):  
Magnetic Fields ◽  
Harmonic Generation ◽  
Laser Pulses ◽  
High Order ◽  
Intense Laser ◽  
Two Dimensional ◽  
Intense Laser Fields ◽  
High Order Harmonic Generation ◽  
Strong Magnetic Fields ◽  
High Order Harmonic

The effect of strong magnetic fields on high-order harmonic generation is considered for the [Formula: see text] molecule and a two-dimensional hydrogen atom in intense laser fields. Exact solutions of the time-dependent Schrödinger equation reveals: (i) strong magnetic fields parallel to the laser polarization confine the ionized electron wavepacket thereby enhancing the intensity and extending the harmonic generation spectrum; (ii) strong magnetic fields in combination with intense circularly polarized laser pulses can be used to control even and odd harmonic generation in two-dimensional atoms.

Collimation of laser-driven energetic protons in a capillary

2012 ◽  
Vol 78 (4) ◽  
pp. 333-337
Author(s):  
D.-P. CHEN ◽  
Y. YIN ◽  
Z.-Y. GE ◽  
H. XU ◽  
H.-B. ZHUO ◽  
...  
Keyword(s):  
Proton Beam ◽  
Electron Flow ◽  
Laser Pulses ◽  
Hot Electrons ◽  
Beam Divergence ◽  
Intense Laser ◽  
Particle In Cell ◽  
Intense Laser Pulses ◽  
Electric And Magnetic Fields ◽  
Set Up

AbstractEnergetic divergent proton beams can be generated in the interaction of ultra-intense laser pulses with solid-density foil targets via target normal sheath acceleration (TNSA). In this paper, a scheme using a capillary to reduce the proton beam divergence is proposed. By two-dimensional particle-in-cell (PIC) simulations, it is shown that strong transverse electric and magnetic fields rapidly grow at the inner surface of the capillary when the laser-driven hot electrons propagate through the target and into the capillary. The spontaneous magnetic field collimates the electron flow, and the ions dragged from the capillary wall by hot electrons neutralize the negative charge and thus restrain the transverse extension of the sheath field set up by electrons. The proton beam divergence, which is mainly determined by the accelerating sheath field, is therefore reduced by the transverse limitation of the sheath field in the capillary.

A mechanism for self-generated magnetic fields in the interaction of ultra-intense laser pulses with thin plasma targets

2009 ◽  
Vol 75 (1) ◽  
pp. 91-98 ◽  
Author(s):  
A. ABUDUREXITI ◽  
T. OKADA ◽  
S. ISHIKAWA
Keyword(s):  
Magnetic Fields ◽  
Laser Pulses ◽  
Underlying Mechanism ◽  
Intense Laser ◽  
Particle In Cell ◽  
Laser Plasma Interactions ◽  
Intense Laser Pulses ◽  
Plasma Target ◽  
Cell Simulation ◽  
Thin Plasma

AbstractIn the study of the interaction of ultra-intense laser pulses with thin plasma targets there appears self-generated magnetic fields in the plasma target. The strong magnetic fields were directly measured in the plasma target, and were attributed to a mechanism of non-parallel electron temperature and density gradients. These magnetic fields can become strong enough to significantly affect the plasma transport. The underlying mechanism of the self-generated magnetic fields in the ultra-intense laser–plasma interactions is presented by using a two-dimensional particle-in-cell simulation.

scholarly journals High laser induced damage threshold photoresists for nano-imprint and 3D multi-photon lithography

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Elmina Kabouraki ◽  
Vasileia Melissinaki ◽  
Amit Yadav ◽  
Andrius Melninkaitis ◽  
Konstantina Tourlouki ◽  
...  
Keyword(s):  
Nanoimprint Lithography ◽  
Three Dimensional ◽  
Damage Threshold ◽  
Laser Pulses ◽  
Intense Laser ◽  
Optical Elements ◽  
Photonic Circuits ◽  
Future Production ◽  
Intense Laser Pulses ◽  
Laser Induced Damage

Abstract Optics manufacturing technology is predicted to play a major role in the future production of integrated photonic circuits. One of the major drawbacks in the realization of photonic circuits is the damage of optical materials by intense laser pulses. Here, we report on the preparation of a series of organic–inorganic hybrid photoresists that exhibit enhanced laser-induced damage threshold. These photoresists showed to be candidates for the fabrication of micro-optical elements (MOEs) using three-dimensional multiphoton lithography. Moreover, they demonstrate pattern ability by nanoimprint lithography, making them suitable for future mass production of MOEs.

scholarly journals Precise description of single and double ionization of hydrogen molecule in intense laser pulses

2012 ◽  
Vol 137 (4) ◽  
pp. 044112 ◽  
Author(s):  
Mohsen Vafaee ◽  
Firoozeh Sami ◽  
Babak Shokri ◽  
Behnaz Buzari ◽  
Hassan Sabzyan
Keyword(s):  
Hydrogen Molecule ◽  
Laser Pulses ◽  
Double Ionization ◽  
Intense Laser ◽  
Precise Description ◽  
Intense Laser Pulses

scholarly journals Ion heating dynamics in solid buried layer targets irradiated by ultra-short intense laser pulses

2013 ◽  
Vol 20 (9) ◽  
pp. 093109 ◽  
Author(s):  
L. G. Huang ◽  
M. Bussmann ◽  
T. Kluge ◽  
A. L. Lei ◽  
W. Yu ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Intense Laser ◽  
Ion Heating ◽  
Intense Laser Pulses ◽  
Buried Layer
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