Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-10T19:34:00.915Z Has data issue: false hasContentIssue false
  • English
  • Français

Stimulated Raman forward scattering of laser in a pre-formed plasma channel

Published online by Cambridge University Press:  25 September 2012

Anuraj Panwar ,
Ashok Kumar  and
C.M. Ryu
Anuraj Panwar*
Affiliation:
Department of Physics, POSTECH, KyungBuk, Pohang, South Korea
Ashok Kumar
Affiliation:
Physics Department, AIAS, ASET, Amity University, Noida, Uttar Pradesh, India
C.M. Ryu
Affiliation:
Department of Physics, POSTECH, KyungBuk, Pohang, South Korea
*
Address correspondence and reprint requests to: Anuraj Panwar, Department of Physics, POSTECH, Hyoja-Dong San 31, KyungBuk, Pohang 790-784, South Korea. E-mail: apanwar@postech.ac.kr or ryu201@postech.ac.kr
Get access Rights & Permissions [Opens in a new window]

Abstract

Stimulated Raman forward scattering (SRFS) of an intense short pulse laser in a plasma channel formed by two pre-laser pulses is investigated. The density nonuniformity of a plasma channel increases the focusing of main laser pulse. Main laser pulse excites a plasma wave and two electromagnetic sideband waves. Laser and the sidebands exert an axial ponderomotive force on electrons driving the plasma wave. The nonlinear currents arise at sideband frequencies. The density perturbation due to plasma wave beats with the oscillatory velocity due to pump to drive the sidebands. The normalized growth rate of SRFS increases with the density nonuniformity of a plasma channel. However, in the presence of a deep plasma channel the focusing is ineffective to laser intensity, but the growth rate increases with the intensity of main laser pulse.

Keywords

Electromagnetic sideband wavesPre-laser pulsesStimulated Raman forward scattering
Type
Research Article
Information
Laser and Particle Beams , Volume 30 , Issue 4 , December 2012 , pp. 605 - 611
Copyright
Copyright © Cambridge University Press 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Akhmanov, S.A., Sukhorukov, A.P. & Khokhlov, R. (1966). Article title here. Sov. Phys. JETP 23, 1025.Google Scholar
Borisov, A.B., Shiryaev, O.B., McPherson, A., Boyer, K. & Rhodes, C.K. (1995). Stability analysis of relativistic and charge-displacement self-channeling of intense laser pulses in underdense plasmas. Plasma Phys. Contr. Fusion 37, 569.CrossRefGoogle Scholar
Chiou, T.C., Katsouleas, T. & Mori, W.B. (1996). Stability of intense laser propagation in an underdense hollow channel plasma. Phys. Plasmas 3, 1700.CrossRefGoogle Scholar
Decker, C.D., Mori, W.B. & Katsouleas, T. (1994). Particle-in-cell simulations of Raman forward scattering from short-pulse high-intensity lasers. Phys. Rev. E 50, R3338.CrossRefGoogle ScholarPubMed
Durfee, C.G. & Milchberg, H.M. (1993). Light pipe for high intensity laser pulses. Phys. Rev. Lett. 71, 2409.CrossRefGoogle ScholarPubMed
Gill, T.S., Mahajan, R. & Kaur, R.R. (2010). Relativistic and ponderomotive effects on evolution of laser beam in a non-uniform plasma channel. Laser Part. Beams 28, 11.Google Scholar
Gill, T.S. & Saini, N.S. (2007). Nonlinear interaction of a rippled laser beam with an electrostatic upper hybrid wave in collisional plasma. Laser Part. Beams 25, 283.CrossRefGoogle Scholar
Kumar, A., Dahiya, D. & Sharma, A.K. (2011). Laser prepulse induced plasma channel formation in air and relativistic self focusing of an intense short pulse. Phys. Plasmas 18, 023102.CrossRefGoogle Scholar
Liu, C.S. & Tripathi, V.K. (1996). Stimulated Raman scattering in a plasma channel. Phys. Plasmas 3, 3410.CrossRefGoogle Scholar
Modena, A., Najmudin, Z., Dangor, A., Clayton, C., Marsh, K., Joshi, C., Malka, V., Darrow, C.B. and Danson, C. & Blackett Laboratory. (1996). Strong absorption, intense forward-raman scattering and relativistic electrons driven by a short, high intensity laser pulse through moderately underdense plasmas. Plasma Sci.IEEE Trans. 24, 289.Google Scholar
Modena, A., Najmudin, Z., Dangor, A.E., Clayton, C.E., Marsh, K.A., Joshi, C., Malka, V., Darrow, C.B., Danson, C., Neely, D. & Walsh, F.N. (2002). Electron acceleration from the breaking of relativistic plasma waves. Nat. 377, 606.Google Scholar
Mori, W.B., Decker, C.D., Hinkel, D.E. & Katsouleas, T. (1994). Raman forward scattering of short-pulse high-intensity lasers. Phys. Rev. Lett. 72, 1482.CrossRefGoogle ScholarPubMed
Nikitin, S.P., Antonsen, T.M., Clark, T.R., Yuelin, L. & Milchberg, H.M. (1997). Guing of intense femtosecond pulses in preformed plasma channels. Opt. Lett. 22, 1787.CrossRefGoogle ScholarPubMed
Rousseaux, C., Rabec le Gloahec, M., Baton, S.D., Amiranoff, F., Fuchs, J., Gremillet, L., Adam, J.C., Hron, A. & Mora, P. (2002). Strong absorption, intense forward-raman scattering and relativistic electrons driven by a short, high intensity laser pulse through moderately underdense plasmas. Phys. Plasmas 9, 4261.CrossRefGoogle Scholar
Sajal, V., Panwar, A. & Tripathi, V.K. (2006). Relativistic forward stimulated raman scattering of a laser in a plasma channel. Phys. Scr. 74, 484.CrossRefGoogle Scholar
Shvets, G. & Li, X. (2001). Raman forward scattering in plasma channels. Phys. Plasmas 8, 8.CrossRefGoogle Scholar
Sodha, M.S., Ghatak, A.K. & Tripathi, V.K. (1974). Self Focusing of Laser Beams in Dielectrics, Plasmas and Semiconductors. Delhi: Tata McGraw-Hill.Google Scholar
Sodha, M.S., Kaushik, S.C. & Sharma, R.P. (1977). Effect of self-focusing on parametric back-scattering and absorptive instabilities in a plasma. J. Plasma Phys. 18, 551.CrossRefGoogle Scholar
Tzeng, K.-C., Mori, W.B. & Decker, C.D. (1996). Anomalous absorption and scattering of short-pulse high- intensity lasers in underdense plasmas. Phys. Rev. Lett. 76, 3332.CrossRefGoogle ScholarPubMed
Verma, U. & Sharma, A.K. (2009). Effect of self focusing on the prolongation of laser produced plasma channel. Laser Part. Beams 27, 33.CrossRefGoogle Scholar
Verma, U. & Sharma, A.K. (2011). Nonlinear electromagnetic eigen modes of a self created magnetized plasma channel and its stimulated raman scattering. Laser Part. Beams 29, 471.CrossRefGoogle Scholar