scholarly journals Beat-wave excitation of plasma wave and observation of accelerated electrons

1992 ◽  
Vol 68 (1) ◽  
pp. 48-51 ◽  
Author(s):  
Y. Kitagawa ◽  
T. Matsumoto ◽  
T. Minamihata ◽  
K. Sawai ◽  
K. Matsuo ◽  
...  
Keyword(s):  
Plasma Wave ◽  
Wave Excitation ◽  
Accelerated Electrons

Effect of relativistic self-focusing on plasma wave excitation by a hollow Gaussian beam

2011 ◽  
Vol 77 (6) ◽  
pp. 777-784 ◽  
Author(s):  
RUCHIKA GUPTA ◽  
M. RAFAT ◽  
R. P. SHARMA
Keyword(s):  
Laser Beam ◽  
Gaussian Beam ◽  
Plasma Wave ◽  
Radial Distance ◽  
Laser Frequency ◽  
Pump Laser ◽  
Wave Excitation ◽  
Paraxial Ray Approximation ◽  
Self Focusing ◽  
Paraxial Ray

AbstractA paraxial-like approach has been invoked to understand the nature of propagation of a hollow Gaussian beam (HGB) propagating in plasma under the influence of relativistic non-linearity. In this approach, the parameters are expanded in terms of the radial distance from the maximum of irradiance rather than that from the axis. This paper investigates the excitation of plasma wave in a hot collision less plasma by HGB. On account of the × force, a plasma wave at 2ω0 (here, ω0 is the pump laser frequency) is generated. The solution of the HGB has been obtained within the paraxial ray approximation. Filamentary structures of the laser beam are observed due to relativistic non-linearity.

scholarly journals Photocontrolled Terahertz Amplified Modulator via Plasma Wave Excitation in ORTD-Gated HEMTs

2017 ◽  
Vol 9 (5) ◽  
pp. 1-8 ◽  
Author(s):  
Changju Zhu ◽  
Luhong Mao ◽  
Fan Zhao ◽  
Xurui Mao ◽  
Weilian Guo
Keyword(s):  
Plasma Wave ◽  
Wave Excitation

scholarly journals Collimated quasi-monochromatic beams of accelerated electrons in the interaction of a weak-contrast intense femtosecond laser pulse with a metal foil

2013 ◽  
Vol 1 (2) ◽  
pp. 80-87 ◽  
Author(s):  
Yu.A. Malkov ◽  
A.N. Stepanov ◽  
D.A. Yashunin ◽  
L.P. Pugachev ◽  
P.R. Levashov ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Plasma Wave ◽  
Aluminum Foil ◽  
Metal Foil ◽  
Accelerated Electrons ◽  
Laser Plasma Interaction ◽  
Particle In Cell ◽  
Temporal Shape ◽  
Effective Excitation

AbstractWe demonstrated experimentally the formation of monoenergetic beams of accelerated electrons by focusing femtosecond laser radiation with an intensity of $2\times 1{0}^{17} ~\mathrm{W} / {\mathrm{cm} }^{2} $ onto the edge of an aluminum foil. The electrons had energy distributions peaking in the 0.2–0.8 MeV range with energy spread less than 20%. The acceleration mechanism related to the generation of a plasma wave as a result of self-modulation instability of a laser pulse in a dense plasma formed by a prepulse (arriving 12 ns before the main pulse) is considered. One-dimensional and two-dimensional Particle in Cell (PIC) simulations of the laser–plasma interaction showed that effective excitation of a plasma wave as well as trapping and acceleration of an electron beam with an energy on the order of 1 MeV may occur in the presence of sharp gradients in plasma density and in the temporal shape of the pulse.

Surface plasma wave excitation via laser irradiated overdense plasma foil

2012 ◽  
Vol 100 (15) ◽  
pp. 151605 ◽  
Author(s):  
Pawan Kumar ◽  
V. K. Tripathi
Keyword(s):  
Plasma Wave ◽  
Wave Excitation ◽  
Surface Plasma ◽  
Overdense Plasma

Strong plasma wave excitation by a ‘‘chirped’’ laser beat wave

1991 ◽  
Vol 3 (7) ◽  
pp. 1773-1780 ◽  
Author(s):  
M. Deutsch ◽  
B. Meerson ◽  
J. E. Golub
Keyword(s):  
Plasma Wave ◽  
Wave Excitation

Laser beat wave excitation of surface plasma wave and material ablation

2007 ◽  
Vol 14 (10) ◽  
pp. 103115 ◽  
Author(s):  
D. B. Singh ◽  
V. K. Tripathi
Keyword(s):  
Plasma Wave ◽  
Wave Excitation ◽  
Surface Plasma

scholarly journals Power Amplification at THz via Plasma Wave Excitation in RTD-Gated HEMTs

2013 ◽  
Vol 3 (2) ◽  
pp. 200-206 ◽  
Author(s):  
Berardi Sensale-Rodriguez ◽  
Lei Liu ◽  
Patrick Fay ◽  
Debdeep Jena ◽  
Huili Grace Xing
Keyword(s):  
Plasma Wave ◽  
Wave Excitation ◽  
Power Amplification
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