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Second-harmonic generation by an obliquely incident s-polarized laser from a magnetized plasma

Published online by Cambridge University Press:  24 February 2016

Deep Kumar Kuri  and
Nilakshi Das
Deep Kumar Kuri*
Affiliation:
Department of Physics, Tezpur University, Tezpur, Assam, 784 028, India
Nilakshi Das
Affiliation:
Department of Physics, Tezpur University, Tezpur, Assam, 784 028, India
*
Address correspondence and reprint requests to: Deep Kumar Kuri, E-mail: [email protected]
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Abstract

Second-harmonic generation by an obliquely incident s-polarized laser from an underdense plasma in the presence of a magnetic field has been investigated analytically. An expression for the relativistic factor γ has been obtained in the presence of magnetic field. The efficiency of second-harmonic radiation η has been obtained as a function of angle of incidence θ, normalized electric field amplitude of laser beam a0, normalized electron density ${\rm \omega} _{\rm p}^2 /{{\rm \omega} ^2}$, and magnetic field b. It is observed that γ increases with b. In turn, the conversion efficiency decreases with an increase in b. It is seen that the conversion efficiency is affected by the magnetic field due to the modified relativistic factor. In the absence of magnetic field, η increases with a0 and θ. However, in the presence of magnetic field, the conversion efficiency starts decreasing as the magnetic field is increased.

Keywords

LaserMagnetic fieldOblique incidenceSecond-harmonic generation
Type
Research Article
Information
Laser and Particle Beams , Volume 34 , Issue 2 , June 2016 , pp. 276 - 283
Copyright
Copyright © Cambridge University Press 2016 

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References

REFERENCES

Dromey, B., Kar, S., Bellei, C., Carroll, D.C., Clarke, R.J., Green, J.S., Kneip, S., Markey, K., Nagel, S.R., Simpson, P.T., Williangle, L., Mckenna, P., Neely, D., Najmudin, Z., Krushelnick, K., Norreys, P.A. & Zepf, M. (2007). Bright multi-keV harmonic generation from relativistically oscillating plasma surfaces. Phys. Rev. Lett. 99, 085001.Google Scholar
Engers, T., Fendel, W., Schuler, H., Schulz, H. & Von der linde, D. (1991). Second-harmonic generation in plasmas produced by femtosecond laser pulses. Phys. Rev. A 43, 4564.CrossRefGoogle ScholarPubMed
Esarey, E., Ting, A., Sprangle, P., Umstadter, D. & Liu, X. (1993). Nonlinear analysis of relativistic harmonic generation by intense lasers in plasmas. IEEE Trans. Plasma Sci. 21, 95.Google Scholar
Gibbon, P. (1997). High-order harmonic generation in plasmas. IEEE J. Quantum Electron. 33, 1915.CrossRefGoogle Scholar
Jha, P. & Agarwal, E. (2014). Second harmonic generation by propagation of a p-polarized obliquely incident laser beam in underdense plasma. Phys. Plasmas 21, 053107.CrossRefGoogle Scholar
Jha, P., Mishra, R.K., Raj, G. & Upadhyay, A.K. (2007). Second harmonic generation in laser magnetized–plasma interaction. Phys. Plasmas 14, 053107.Google Scholar
Krushelnick, K., Ting, A., Burris, H.R., Fisher, A., Manka, C. & Esarey, E. (1995). Second harmonic generation of stimulated Raman scattered light in underdense plasmas. Phys. Rev. Lett. 75, 3681.Google Scholar
Malka, V., Modena, A., Najmudin, Z., Dangor, A.E., Clayton, C.E., Marsh, K.A., Joshi, C., Danson, C., Neely, D. & Walsh, F.N. (1997). Second harmonic generation and its interaction with relativistic plasma waves driven by forward Raman instability in underdense plasmas. Phys. Plasmas 4, 1127.Google Scholar
Meyer, J. & Zhu, Y. (1987). Second harmonic emission from an underdense laser-produced plasma and filamentation. Phys. Fluids 30, 890.Google Scholar
Mori, W.B., Decker, C.D. & Leemans, W.P. (1993). Relativistic harmonic content of nonlinear electromagnetic waves in underdense plasmas. IEEE Trans. Plasma Sci. 21, 110.Google Scholar
Qian, B. (2000). Relativistic motion of a charged particle in a superposition of circularly polarized plane electromagnetic waves and a uniform magnetic field. Phys. Plasmas 7, 537.CrossRefGoogle Scholar
Rax, J.M., Robiche, J. & Kostyukov, I. (2000). Relativistic second-harmonic generation and conversion in a weakly magnetized plasma. Phys. Plasmas 7, 1026.Google Scholar
Salih, H.A., Tripathi, V.K. & Pandey, B.K. (2003). Second-harmonic generation of a Gaussian laser beam in a self created magnetized plasma channel. IEEE Trans. Plasma Sci. 31, 3.CrossRefGoogle Scholar
Singh, K.P., Gupta, D.N., Yadav, S. & Tripathi, V.K. (2005). Relativistic second-harmonic generation of a laser from underdense plasmas. Phys. Plasmas 12, 013101.CrossRefGoogle Scholar
Verma, U. & Sharma, A.K. (2009). Laser second harmonic generation in a rippled density plasma in the presence of azimuthal magnetic field. Laser Part. Beams 27, 719–724.Google Scholar