@article{aac0d915075f4777a87710e5571d291f,
title = "Generation of plasma wave at pump-wave frequency and second harmonic generation at ultrarelativistic laser power",
abstract = "In this paper, the influence of ponderomotive and relativistic nonlinearities on the filamentation of an ultraintense laser pulse is investigated in three dimensions within the paraxial ray approximations. Generation of electron plasma wave (EPW) structure at pump-wave frequency and the second harmonic generation in these filamentary structures are reported. The generation of the plasma wave is due to intensity gradient (in the transverse direction of the laser beam in filamentary structure) and density gradient (due to ponderomotive-force effect). For typical laser-plasma parameters: The laser intensity = 2.5 × 1020 W/cm2; the particles density = 1.9 × 1019 cm-3; and it is found that the maximum intensity of EPW is in the range of 2.0 × 1013 W/cm 2. Interaction of the plasma wave with the incident laser beam leads to second harmonic generation, and the yield comes out to be ≈ 2.1 × 10-7.",
keywords = "Particle acceleration, plasma waves, second harmonic generation",
author = "Prerana Sharma and Mahmoud, {Saleh T.} and Chauhan, {Prashant K.} and Sharma, {R. P.} and Gupta, {Manoj Kumar}",
note = "Funding Information: Manuscript received April 12, 2008; revised August 18, 2008, December 23, 2008, and May 31, 2009. First published October 20, 2009; current version published November 11, 2009. This work was supported in part by DST India. P. Sharma is with the Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110 016, India, on leave from the Government Engineering College, Ujjain 456010, India. S. T. Mahmoud is with the Physics Department, United Arab Emirates University, Al-Ain, United Arab Emirates (e-mail: saleh.thaker@uaeu.ac.ae; stmh99@yahoo.com). P. K. Chauhan and R. P. Sharma are with the Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110 016, India. M. K. Gupta is with the Department of Electronic Science, University of Delhi, New Delhi 110 021, India. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TPS.2009.2030810 Funding Information: The author M. K. Gupta would like to thank the Council of Scientific and Industrial Research (CSIR), HRDG, Government of India, for granting the assistantship and the author P. Sharma would also like to thank AICTE for providing the assistance for this paper.",
year = "2009",
doi = "10.1109/TPS.2009.2030810",
language = "English",
volume = "37",
pages = "2158--2165",
journal = "IEEE Transactions on Plasma Science",
issn = "0093-3813",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "11",
}