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.

Atom under an intense laser pulse: Stabilization effect and strong-field approximation

2007 ◽  
Vol 105 (3) ◽  
pp. 526-534 ◽  
Author(s):  
E. A. Volkova ◽  
A. M. Popov ◽  
M. A. Tikhonov ◽  
O. V. Tikhonova
Keyword(s):  
Laser Pulse ◽  
Strong Field ◽  
Field Approximation ◽  
Intense Laser ◽  
Intense Laser Pulse ◽  
Stabilization Effect

scholarly journals Broadband THz Sources from Gases to Liquids

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Yiwen E ◽  
Liangliang Zhang ◽  
Anton Tcypkin ◽  
Sergey Kozlov ◽  
Cunlin Zhang ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Laser Pulses ◽  
High Energy ◽  
Wave Generation ◽  
High Energy Density ◽  
Intense Laser ◽  
Thz Radiation ◽  
Flowing Liquid ◽  
Thz Wave ◽  
Thz Sources

Matters are generally classified within four states: solid, liquid, gas, and plasma. Three of the four states of matter (solid, gas, and plasma) have been used for THz wave generation with short laser pulse excitation for decades, including the recent vigorous development of THz photonics in gases (air plasma). However, the demonstration of THz generation from liquids was conspicuously absent. It is well known that water, the most common liquid, is a strong absorber in the far infrared range. Therefore, liquid water has historically been sworn off as a source for THz radiation. Recently, broadband THz wave generation from a flowing liquid target has been experimentally demonstrated through laser-induced microplasma. The liquid target as the THz source presents unique properties. Specifically, liquids have the comparable material density to that of solids, meaning that laser pulses over a certain area will interact with three orders more molecules than an equivalent cross-section of gases. In contrast with solid targets, the fluidity of liquid allows every laser pulse to interact with a fresh area on the target, meaning that material damage or degradation is not an issue with the high-repetition rate intense laser pulses. These make liquids very promising candidates for the investigation of high-energy-density plasma, as well as the possibility of being the next generation of THz sources.

scholarly journals Semiclassical two-step model for ionization by a strong laser pulse: further developments and applications

2021 ◽  
Vol 75 (4) ◽  
Author(s):  
N. I. Shvetsov-Shilovski
Keyword(s):  
Laser Pulse ◽  
Quantum Interference ◽  
Hydrogen Molecule ◽  
Strong Field ◽  
Intense Laser ◽  
Field Ionization ◽  
Intense Laser Pulse ◽  
Polarization Effects ◽  
Strong Field Ionization ◽  
Step Model

Abstract We review the semiclassical two-step model for strong-field ionization. The semiclassical two-step model describes quantum interference and accounts for the ionic potential beyond the semiclassical perturbation theory. We discuss formulation and implementation of this model, its further developments, as well as some of the applications. The reviewed applications of the model include strong-field holography with photoelectrons, multielectron polarization effects in ionization by an intense laser pulse, and strong-field ionization of the hydrogen molecule. Graphic Abstract

High-energy ionization for intense laser pulse diagnostics

2019 ◽  
Vol 61 (7) ◽  
pp. 074004 ◽  
Author(s):  
K Krajewska ◽  
F Cajiao Vélez ◽  
J Z Kamiński
Keyword(s):  
Laser Pulse ◽  
High Energy ◽  
Intense Laser ◽  
Intense Laser Pulse
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