Stimulated Raman backscatter from short laser pulses in plasmas

1994 ◽  
Author(s):  
Nikolai E. Andreev ◽  
L. M. Gorbunov
Keyword(s):  
Laser Pulses ◽  
Short Laser Pulses ◽  
Raman Backscatter ◽  
Stimulated Raman

Numerical Simulation of Ultra-short Laser Pulses Propagation in Gas Media

2020 ◽  
Author(s):  
Katsiaryna Cidorkina ◽  
Alexander Svetashev ◽  
Ilya Bruchkouski ◽  
Siarhei Barodka ◽  
Leonid Turishev
Keyword(s):  
Numerical Simulation ◽  
High Power ◽  
Pulse Propagation ◽  
Stimulated Raman Scattering ◽  
Practical Interest ◽  
Wave Theory ◽  
Laser Pulses ◽  
Pure Nitrogen ◽  
Short Laser Pulses ◽  
Stimulated Raman

<p><span>Over the past ten years, important theoretical and practical results have been obtained in the field of interaction of high-power ultra-short laser pulses with solid transparent media. These results are significant for nonlinear optics and laser physics and are of practical interest for the development of femtosecond laser technology in sensing the environment, in the management of electrical discharge, in microphotonics.</span></p><p><span>However, many of the physical aspects of the supercontinuum generation and distribution of high-power femtosecond and attosecond laser pulses in an optically transparent gas media are not clear and require a detailed theoretical study.</span></p><p><span>Main objectives of the present study are the numerical simulation of high-intensity femtosecond pulses in the air, given the stimulated Raman scattering (SRS) and the stimulated Raman self-mode (SRSM) on pure nitrogen and oxygen molecules as well as on their mixtures.</span></p><p><span>Computer programs have been developed for solving nonlinear equations associated with the SRS and SRSM on the basis of a semi-classical energetic and wave theory with the help of numerical methods. </span></p><p><span>All calculations were made in the Visual Studio C ++ and Java programming environment. </span></p><p><span>The SRS mode for the distance of up to 5m for the main components of the air - nitrogen (78%) and oxygen (21%), in addition to the dynamics of the change of the pulse energy for different initial values have been calculated. </span></p><p><span>The propagation of SRMS laser pulses (λ=400, 800 nm; τ= 14, 20 fs) with positive chirp was numerically investigated for pulse energies 2π, π, π/100 and βz = 0.5, 1.0, 1.5.</span></p><p><span>The results obtained show that the dynamics of pulse propagation in SRMS mode is nonlinear in the pulse shape and spectrum. </span></p><p><span>It was estimated that the calculation results in energetic and wave models for </span>β<span>z≤1.5 are similar.</span></p>

Two-dimensional stimulated Raman scattering of short laser pulses

1995 ◽  
Vol 51 (4) ◽  
pp. 3752-3755 ◽  
Author(s):  
C. J. McKinstrie ◽  
R. Betti ◽  
R. E. Giacone ◽  
T. Kolber ◽  
E. J. Turano
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Laser Pulses ◽  
Two Dimensional ◽  
Short Laser Pulses ◽  
Stimulated Raman

Stimulated Raman Scattering of Rapidly Amplified Short Laser Pulses

2000 ◽  
Vol 85 (19) ◽  
pp. 4068-4071 ◽  
Author(s):  
V. M. Malkin ◽  
Yu. A. Tsidulko ◽  
N. J. Fisch
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Laser Pulses ◽  
Short Laser Pulses ◽  
Stimulated Raman

Stimulated Raman scattering in compressed gases by short laser pulses

2001 ◽  
Author(s):  
Alexander I. Vodchits ◽  
Wolfgang Werncke ◽  
S. Hogiu ◽  
Valentin A. Orlovich
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Laser Pulses ◽  
Short Laser Pulses ◽  
Stimulated Raman

scholarly journals Production of ion beams in high-power laser–plasma interactions and their applications

2004 ◽  
Vol 22 (1) ◽  
pp. 19-24 ◽  
Author(s):  
F. PEGORARO ◽  
S. ATZENI ◽  
M. BORGHESI ◽  
S. BULANOV ◽  
T. ESIRKEPOV ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Medical Physics ◽  
Ion Beam ◽  
Laser Pulses ◽  
Ion Beams ◽  
Laser Plasma Interactions ◽  
Physical Mechanisms ◽  
Short Laser Pulses ◽  
Laser Pulse Intensity ◽  
Target Design

Energetic ion beams are produced during the interaction of ultrahigh-intensity, short laser pulses with plasmas. These laser-produced ion beams have important applications ranging from the fast ignition of thermonuclear targets to proton imaging, deep proton lithography, medical physics, and injectors for conventional accelerators. Although the basic physical mechanisms of ion beam generation in the plasma produced by the laser pulse interaction with the target are common to all these applications, each application requires a specific optimization of the ion beam properties, that is, an appropriate choice of the target design and of the laser pulse intensity, shape, and duration.

Stimulated Raman Backscatter from a Magnetically Confined Plasma Column

1982 ◽  
Vol 49 (6) ◽  
pp. 371-375 ◽  
Author(s):  
A. A. Offenberger ◽  
R. Fedosejevs ◽  
W. Tighe ◽  
W. Rozmus
Keyword(s):  
Plasma Column ◽  
Magnetically Confined ◽  
Raman Backscatter ◽  
Stimulated Raman

Mechanisms of nanoparticle formation by short laser pulses

2007 ◽  
Author(s):  
Tatiana E. Itina ◽  
Mikhail E. Povarnitsyn ◽  
Karine Gouriet ◽  
Sylvie Noël ◽  
Jörg Hermann
Keyword(s):  
Laser Pulses ◽  
Nanoparticle Formation ◽  
Short Laser Pulses

Multistate non-Hermitian Floquet dynamics in short laser pulses

2000 ◽  
Vol 61 (3) ◽  
Author(s):  
H. C. Day ◽  
Bernard Piraux ◽  
R. M. Potvliege
Keyword(s):  
Laser Pulses ◽  
Short Laser Pulses
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