Resonant third harmonic generation of super-Gaussian laser beam in a rippled density plasma
| Autor: | Hitendra K. Malik, Lalita Devi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Electron density Third harmonic generation Physics and Astronomy (miscellaneous) Ripple Phase matching Plasma Ponderomotive force Laser 01 natural sciences lcsh:QC1-999 010305 fluids & plasmas law.invention law Density ripples 0103 physical sciences Harmonic Wavenumber Self guided beams Atomic physics 010306 general physics Super-Gaussian beams lcsh:Physics Beam (structure) |
| Zdroj: | Journal of Theoretical and Applied Physics, Vol 12, Iss 4, Pp 265-270 (2018) |
| ISSN: | 2251-7235 2251-7227 |
| DOI: | 10.1007/s40094-018-0305-0 |
| Popis: | 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 quasi-static 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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