Resonant third harmonic generation of super‑Gaussian laser beam in a rippled density plasma
Journal of Theoretical and Applied Physics December 2018, Volume 12 - Issue 4 (6 صفحه - از 265 تا 270)
Resonant third harmonic generation of super-Gaussian laser beam in rippled density plasma is studied. Both the relativistic and ponderomotive nonlinearities are included in the analysis, and the study is done for self-guided laser beam. The quasistatic component of ponderomotive force creates electron density depression in the beam region while the second harmonic component leads to second harmonic density oscillations, leading to third harmonic generation. The relativistic mass variation supplements these processes with same order of contributions. The ripple provides the phase matching and requisite ripple wave number decreases with the frequency of the laser.کلیدواژه ها:
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