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Collisional effects on the modulational instability of intense laser pulses in magnetoactive plasmas

  • A. R. Niknam (a1), S. Barzegar (a1), B. Bokaei (a1), F. Haji Mirzaei (a2) and A. Aliakbari (a3)...

Abstract

The modulational instability associated with propagation of an intense laser pulse through a transversely magnetized plasma is investigated in the presence of collisional effects. The source-dependent expansion method for analyzing the wave equation is employed. The dispersion relation is obtained and modulational instability and its growth rate are studied. It is shown that in the absence of collisional effects the modulational instability is restricted to the small wavenumber region and the constant magnetic field reduces the growth rate of the instability. In contrast, in the collisional plasma, there is no upper limit of wavenumber for the existence of modulational instability. In addition, in this case, the growth rate of instability increases as the collision frequency goes up.

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Corresponding author

Address correspondence and reprint request to: Ali Reza Niknam, Laser and Plasma Research Institute, Shahid Beheshti University, G.C., Tehran, Iran. E-mail: a-niknam@sbu.ac.ir

References

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Bokaei, B., Niknam, A.R. & Milani, M.R.J. (2013). Turning point temperature and competition between relativistic and ponderomotive effects in self-focusing of laser beam in plasma. Phys. Plasmas 20, 103107103111.
Chen, H.Y., Liu, S.Q. & Li, X.Q. (2010). Modulation instability by intense laser beam in magnetized plasma. Optik 122, 599603.
Couairon, A., Biegert, J., Hauri, C.P., Kornelis, W., Helbing, F.W., Keller, U. & Mysyrowicz, A. (2006). Self-compression of ultra-short laser pulses down to one optical cycle by filamentation. J. Mod. Optic. 53, 75.
Deutsch, C., Furukawa, H., Mima, K., Murakami, M. & Nishihara, K. (1996). Interaction physics of the fast ignitor concept. Phys. Rev. Lett. 77, 24832486.
Fuchs, J., d'Humires, E., Sentoku, E.Y., Antici, P., Atzeni, S., Bandulet, H., Depierreux, S., Labaune, C. & Schiavi, A. (2010). Enhanced propagation for relativistic laser pulses in inhomogeneous plasmas using hollow channels. Phys. Rev. Lett. 105, 225001225004.
Gill, T.S., Kaur, R. & Mahajan, R. (2011). Relativistic self-focusing and self-phase modulation of cosh-Gaussian laser beam in magnetoplasma. Laser Part. Beams 29, 183191.
Guerin, S., Laval, G., Mora, P., Adam, J.C., Heron, A. & Bendib, A. (1995). Modulational and Raman instabilities in the relativistic regime. Phys. Plasmas 2, 2807.
Jha, P., Kumar, P., Raj, G. & Upadhyaya, A.K. (2005). Modulation instability of laser pulse in magnetized plasma. Phys. Plasmas 12, 123104123109.
Lin, H., Chen, L.M. & Kieffer, J.C. (2002). Harmonic generation of ultraintense laser pulses in underdense plasma. Phys. Rev. E 65, 036414036419.
Mauger, S., Berge, L. & Skupin, S. (2010). Self-focusing versus stimulated Brillouin scattering of laser pulses in fused silica. New J. Phys. 12, 103049103057.
Niknam, A.R., Aliakbari, A., Majedi, S., Haji Mirzaei, F. & Hashemzadeh, M. (2011). Self-focusing of intense high frequency electromagnetic waves in a collisional magnetoactive plasma. Phys. Plasmas 18, 112305112311.
Niknam, A.R., Barzegar, S. & Hashemzadeh, M. (2013). Self-focusing and stimulated Brillouin back-scattering of a long intense laser pulse in a finite temperature relativistic plasma. Phys. Plasmas 20, 122117122122.
Niknam, A.R., Rastbood, E., Bafandeh, F., Khorashadizadeh, S.M. (2014). Modulational instability of electromagnetic waves in a collisional quantum magnetoplasma. Phys. Plasmas 21, 042307042311.
Pathak, V.B. & Tripathi, V.K. (2006). Nonlinear electromagnetic plasma eigenmodes and their stability to stimulated Raman scattering. Phys. Plasmas 13, 082105082108.
Quesnel, B., Mora, P., Adam, J.C., Heron, A. & Laval, G. (1997). Electron parametric instabilities of ultra intense short laser-pulses propagating in plasmas. Phys. Rev. Lett. 78, 21322135.
Saini, N.S. & Gill, T.S. (2006). Self-focusing and self-phase modulation of an elliptic Gaussian laser beam in collisionless magnetoplasma. Laser Part. Beams 24, 447453.
Sen, G.K. (1978). Modulational instability from an intense elliptically polarized electromagnetic wave in a homogeneous unmagnetized plasma. Plasma Phys. 20, 13131324.
Shorokhov, O., Pukhov, A. & Kostyukov, I. (2003). Self-compression of laser pulses in plasma. Phys. Rev. Lett. 91, 265002.
Sprangle, P., Hafizi, B. & Penano, J.R. (2000). Laser pulse modulation instabilities in plasma channels. Phys. Rev. E 61, 43814384.
Tajima, T. & Dawson, J.M. (1979). Laser electron accelerator. Phys. Rev. Lett. 43, 267270.

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