Abstract
This paper presents an investigation of self-focusing of gaussian laser beam in a collisionless plasma and its effect on second harmonic generation. In the presence of gaussian beam, the carriers get redistributed from the high field region to low field region by ponderomotive force and transverse density gradient is established in plasma which in turn generates the plasma wave at pump frequency. This plasma wave interacts with incident laser beam and a second harmonic is generated. Furthermore, if the initial power of input beam is more than the critical power for self-focusing, the beam gets self-focused and hence the generated plasma wave and second harmonic which depend upon the background electron concentration and power of the main beam also get modified accordingly.
Similar content being viewed by others
References
M.H. Key et al., Phys. Plasmas 5, 1966 (1998)
M. Tabak et al., Phys. Plasmas 1, 1626 (1994)
A.Y. Faenov et al., Laser Part. Beams 25, 267 (2007)
L. Torrisi et al., Laser Part. Beams 26, 379 (2008)
T. Tajima, J.M. Dawson, Phys. Rev. Lett. 43, 267 (1979)
P. Jha et al., Phys. Rev. ST Accel. Beams 8, 071301 (2005)
C. Deutsche et al., Phys. Rev. Lett. 77, 2483 (1996)
S.P. Regan et al., Phys. Plasmas 6, 2072 (1999)
B. Hafizi et al., Phys. Rev. E 62, 4120 (2000)
J.C. Solem et al., IEEE J. Quantum Electron. 25, 2423 (1989)
B.E. Lemoff et al., Phys. Rev. Lett. 74, 1574 (1995)
J. Davis et al., Phys. Plasmas 12, 123 (2005)
M. Liu et al., Phys. Lett. A 352, 457 (2006)
X. Liu et al., IEEE Trans. Plasma Sci. 21, 90 (1993)
A.L. Huillier, P. Balcou, Phys. Rev. Lett. 70, 774 (1993)
P. Gibbon, IEEE J. Quantum Electron. 33, 1915 (1997)
S. Nuzzo et al., Laser Part. Beams. 18, 483 (2000)
H. Merdji et al., Laser Part. Beams. 18, 489 (2000)
P.E. Young et al., Phys. Rev. Lett. 63, 2812 (1989)
T. Engers et al., Phys. Rev. A 43, 4565 (1991)
J. Parasher, H.D. Pandey, IEEE Trans. Plasma Sci. 20, 996 (1992)
V. Malka et al., Phys. Plasmas 4, 1127(1997)
E. Schifano et al., Laser Part. Beams 12, 435 (1994)
E. Esarey et al., IEEE Trans. Plasma Sci. 21, 95 (1993)
S.D. Baton et al., Europhys. Lett. 23, 191(1993)
F. Brandi et al., Phys. Rev. Lett. 96, 123904(2006)
R.A. Ganeev et al., Phys. Rev. A 76, 023805(2007)
M.K. Gupta et al., Laser Part. Beams 25, 211(2007)
T. Ozaki et al., Laser Part. Beams 24, 101(2006)
S.A. Akhmanov et al., Sov. Phys. Uspekhi. 10, 609(1968)
M.S. Sodha et al., Self Focusing of Laser Beams in Dielectrics, Semiconductors and Plasmas. (Tata-McGraw-Hill, Delhi, 1974)
M.S. Sodha et al., Progress in Optics. (North Holland, Amsterdam, 1976), p.171
S.N. Vlasov, V.A. Petrishchev, V.I. Talanov, Radiophys. Quantum Electron. 14, 1062 (1971)
J.F. Lam, B. Lippman, F. Tappert, Phys. Fluids 20, 1176 (1977)
Acknowledgments
The authors would like to thank Ministry of Human Resources and Development of India for the support of this work.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Singh, A., Walia, K. Self-focusing of Gaussian Laser Beam Through Collisionless Plasmas and Its Effect on Second Harmonic Generation. J Fusion Energ 30, 555–560 (2011). https://doi.org/10.1007/s10894-011-9426-z
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10894-011-9426-z