Abstract
This work presents an analytical and numerical study of the relativistic-ponderomotive effect on self-focusing of an intense cosh-Gaussian laser beam in a collisionless magnetized plasma by considering an external magnetic field in the direction of propagation of the laser beam. The nonlinear differential equation for the beam width parameter/intensity of a cosh-Gaussian laser beam in a magnetized plasma is obtained by Wentzel–Kramers–Brillouin (WKB) and paraxial-ray approximations. The self-focusing of the cosh-Gaussian beam at different values of the magnetic field parameter is investigated. The results have also been compared to relativistic nonlinearity. The results show that the self-focusing effect of cosh-Gaussian beam in magnetized plasma becomes stronger, when relativistic and ponderomotive nonlinearities acts together. In addition, the self-trapping of cosh-Gaussian beam in magnetized plasma has also been studied. Numerical results are presented for the well-established laser and plasma parameters.
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References
Abedi-Varaki, M.: The effect of the wiggler magnetic field strength on the self-focusing of an intense laser pulse propagating through a magnetized non-Maxwellian plasma. Phys. Plasmas 24, 122308 (2017)
Abedi-Varaki, M.: Effect of obliquely external magnetic field on the intense laser pulse propagating in plasma medium. Int. J. Mod. Phys. B 34, 2050044 (2020)
Abedi-Varaki, M., Jafari, S.: Self-focusing and de-focusing of intense left- and right-hand polarized laser pulse in hot magnetized plasma in the presence of an external non-uniform magnetized field. Braz. J. Phys. 47, 473–480 (2017)
Aggarwal, M., Vij, S., Kant, N.: Propagation of cosh Gaussian laser beam in plasma with density ripple in relativistic-ponderomotive regime. Optik 125, 5081–5084 (2014)
Akhmanov, A., Sukhorukov, A.P., Khokhlov, R.V.: Self-focusing and diffraction of light in a nonlinear medium. Sov. Phys. Uspekhi 10, 609–636 (1968)
Banerjee, S., Valenzuela, A.R., Shah, R.C., Maksimchuk, A., Umstadter, D.: High harmonic generation in relativistic laser–plasma interaction. Phys. Plasmas 9, 2393–2398 (2002)
Betti, R., Hurricane, O.: Inertial-confinement fusion with lasers. Nat. Phys. 12, 435–448 (2016)
Borghesi, M., Mackinnon, A.J., Gaillard, R., Willi, O., Pukhov, A., Meyer-ter-Vehn, J.: Large quasistatic magnetic fields generated by a relativistically intense laser pulse propagating in a preionized plasma. Phys. Rev. Lett. 80, 5137–5140 (1998)
Brandi, H.S., Manus, C., Mainfray, G., Lehner, T., Bonnaud, G.: Relativistic and ponderomotive self-focusing of a laser beam in a radially inhomogeneous plasma I. Paraxial approximation. Phys. Fluids B 5, 3539–3550 (1994)
Corde, S., Ta Phuoc, K., Lambert, G., Fitour, R., Malka, V., Rousse, A., Beck, A., Lefebvre, E.: Femtosecond X-rays from laser-plasma accelerators. Rev. Mod. Phys. 85, 1–48 (2013)
Devi, L., Malik, H.K.: Role of magnetic field on self-focusing of super-Gaussian laser beam under relativistic effect. Optik 207, 164439 (2020)
Esarey, E., Schroeder, C.B., Leemans, W.P.: Physics of laser-driven plasma-based electron accelerators. Rev. Mod. Phys. 81, 1229–1286 (2009)
Feit, M.D., Komashko, A.M., Rubenchik, A.M.: Relativistic self-focusing in underdense plasma. Physica D 152–153, 705–713 (2001)
Fuchs, J., Malka, G., Adam, J.C., Amiranoff, F., Baton, S.D., Blanchot, N., Héron, A., Laval, G., Miquel, J.L., Mora, P., Pépin, H., Rousseaux, C.: Dynamics of subpicosecond relativistic laser pulse self-channeling in an underdense preformed plasma. Phys. Rev. Lett. 80, 1658–1661 (1998)
Gill, T.S., Mahajan, R., Kaur, R.: Self-focusing of cosh-Gaussian laser beam in a plasma with weakly relativistic and ponderomotive regime. Phys. Plasmas 18, 033110 (2011)
Gill, T.S., Kaur, R., Mahajan, R.: Self-focusing of super-Gaussian laser beam in magnetized plasma under relativistic and ponderomotive regime. Optik 126, 1683–1690 (2015)
Gupta, N., Bhardwaj, S.B.: Nonlinear interaction of Bessel–Gauss laser beams with plasmas with axial temperature ramp. J. Opt. 51, 950–959 (2022)
Gupta, N., Kumar, S.: Generation of second harmonics of relativistically self-focused q-Gaussian laser beams in underdense plasma with axial density ramp. Opt. Quantum Electron. 53, 193 (2021a)
Gupta, N., Kumar, S.: Nonlinear interaction of elliptical q-Gaussian laser beams with plasmas with axial density ramp: effect of ponderomotive force. Opt. Quantum Electron. 53, 253 (2021b)
Habibi, M., Gambari, F.: Improved focusing of a cosh-Gaussian laser beam in quantum plasma: higher order paraxial theory. IEEE Trans. Plasma Sci. 43, 2160–2165 (2015)
Hora, H.: Theory of relativistic self-focusing of laser radiation in plasmas. J. Opt. Soc. Am. 65, 882–886 (1975)
Jafari Milani, M.R., Niknam, A.R., Farahbod, A.H.: Ponderomotive self-focusing of Gaussian laser beam in warm collisional plasma. Phys. Plasmas 21, 063107 (2014)
Jaroszynski, D.A., Bingham, R., Brunetti, E., Ersfeld, B., Gallacher, J., van der Geer, B., Issac, R., Jamison, S.P., Jones, D., de Loos, M., Lyachev, A., Pavlov, V., Reitsma, A., Saveliev, Y., Vieux, G., Wiggins, S.M.: Radiation sources based on laser–plasma interactions. Philos. Trans. r. Soc. A 364, 689–710 (2006)
Jha, P., Mishra, R.K., Upadhyaya, A.K., Raj, G.: Self-focusing of intense laser beam in magnetized plasma. Phy. Plasmas 13, 103102 (2006)
Kaur, R., Gill, T.S., Mahajan, R.: Relativistic effects on evolution of a q-Gaussian laser beam in magnetoplasma: application of higher order corrections. Phys. Plasmas 24, 053105 (2017)
Konar, S., Mishra, M., Jana, S.: Nonlinear evolution of cosh-Gaussian laser beams and generation of flat top spatial solitons in cubic quintic nonlinear media. Phys. Lett. A 362, 505–510 (2007)
Kruer, W.L.: The Physics of Laser Plasma Interaction. Addison-Wesley, New York (1988)
Lei, A.L., Tanaka, K.A., Kodama, R., Adumi, K., Habara, H., Kitagawa, Y., Kondo, K., Matsuoka, T., Tanimoto, T., Yabuuchi, T., Mima, K., Nagai, K., Nagatomo, H., Norimatsu, T., Sawai, K., Suzuki, K., Yu, W., Xu, H., Yang, X.O., Cao, L.H., Cai, H.B., Sentoku, Y., Pukhov, A., Kumar, R., Snavely, R., Freeman, R., Yu, M., Zheng, J.: Study of ultra-intense laser propagation in overdense plasmas for fast ignition. Phys. Plasmas 16, 056307 (2009)
Liao, G.-Q., Tong, Y.: Review of intense terahertz radiation from relativistic laser produced plasmas. IEEE Trans. Plasma Sci. 47, 3002–3008 (2019)
Malekshahi, M., Dorranian, D., Askari, H.R.: Self-focusing of the high intensity ultra-short laser pulse propagating through relativistic magnetized plasma. Opt. Commun. 332, 227–232 (2014)
Mori, W.B., Joshi, C., Dawson, J.M., Forslund, D.W., Kindel, J.M.: Evolution of self-focusing of intense electromagnetic waves in plasma. Phys. Rev. Lett. 60, 1298–1301 (1988)
Nanda, V., Kant, N.: Strong self-focusing of a cosh-Gaussian laser beam in collisionless magneto-plasma under plasma density ramp. Phys. Plasmas 21, 072111 (2014)
Patil, S.D., Takale, M.V., Navare, S.T., Fulari, V.J., Dongare, M.B.: Relativistic self-focusing of cosh-Gaussian laser beams in a plasma. Opt. Laser Tech. 44, 314–317 (2012)
Patil, S.D., Takale, M.V., Fulari, V.J., Gupta, D.N., Suk, H.: Combined effect of ponderomotive and relativistic self-focusing on laser beam propagation in a plasma. Appl. Phys. B 111, 1–6 (2013)
Purohit, G., Gaur, B.: Self-focusing of cosh-Gaussian laser beam and its effect on the excitation of ion-acoustic wave and stimulated Brillouin backscattering in collisionless plasma. Opt. Quantum Electron. 51, 398 (2019)
Purohit, G., Sharma, R.K., Kothiyal, P.: Relativistic-ponderomotive effect on the self-focusing of a high-intensity cosh-Gaussian laser beam in plasma: higher-order paraxial regime. J. Opt. (2022). https://doi.org/10.1007/s12596-022-00931-y
Rawat, P., Purohit, G.: Self-focusing of a cosh-Gaussian laser beam in magnetized plasma under relativistic-ponderomotive regime. Contrib. Plasma Phys. 59, 226–235 (2018)
Rawat, P., Rawat, V., Gaur, B., Purohit, G.: Generation of terahertz radiation by intense hollow Gaussian laser beam in magnetized plasma under relativistic-ponderomotive regime. Phys. Plasmas 24, 073113 (2017)
Sharma, A., Tripathi, V.K.: Relativistic and ponderomotive self-focusing of a laser pulse in magnetized plasma. Laser Part. Beams 30, 659–664 (2012)
Sodha, M.S., Ghatak, A.K., Tripathi, V.K.: Self-focusing of laser beams in plasmas and semiconductors. Prog. Opt. 13, 169–265 (1976)
Startsev, E.A., Mc Kinstrie, C.J.: Multiple scale derivation of the relativistic ponderomotive force. Phys. Rev. E 55, 7527–7535 (1997)
Sun, G.Z., Ott, E., Lee, Y.C., Guzdar, P.: Self-focusing of short intense pulses in plasmas. Phys. Fluids 30, 526–532 (1987)
Vhanmore, B.D., Valkunde, A.T., Urunkar, T.U., Gavade, K.M., Patil, S.D., Takale, M.V.: Self-focusing of higher-order asymmetric elegant hermite-cosh-Gaussian laser beams in collisionless magnetized plasma. Eur. Phys. J. D 73, 45 (2019)
Wang, Y., Zhou, Z.: Propagation characters of Gaussian laser beams in collisionless plasma: Effect of plasma temperature. Phys. Plasmas 18, 043101 (2011)
Wilson, T.C., Li, F.Y., Weikum, M., Sheng, Z.M.: Influence of strong magnetic fields on laser pulse propagation in underdense plasma. Plasma Phys. Control. Fusion 59, 065002 (2017)
Zare, S., Yazdani, E., Rezaee, S., Anvari, A., Sadighi-Bonabi, R.: Relativistic self-focusing of intense laser beam in thermal collisionless quantum plasma with ramped density profile. Phys. Rev. ST Accel. Beams 18, 041301 (2015)
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Purohit, G. Effect of an external magnetic field on the self-focusing of a cosh-Gaussian laser beam in plasma under the relativistic-ponderomotive effect. Opt Quant Electron 55, 429 (2023). https://doi.org/10.1007/s11082-023-04717-9
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DOI: https://doi.org/10.1007/s11082-023-04717-9