Effect of magnetic field on THz radiation generation by self-focusing of a super Gaussian laser beam in a rippled density plasma
Over the past three decades, much attention has been devoted to improving new methods to generate terahertz (THz) radiation. By providing ponderomotive nonlinearity in ionized plasma, the excitation of nonlinearity by laser-based techniques has emerged as a promising way for THz generation. In this...
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AIP Publishing LLC
2024-12-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0239903 |
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| author | Mitra Amouamouha Farhad Bakhtiari Bijan Ghafary |
| author_facet | Mitra Amouamouha Farhad Bakhtiari Bijan Ghafary |
| author_sort | Mitra Amouamouha |
| collection | DOAJ |
| description | Over the past three decades, much attention has been devoted to improving new methods to generate terahertz (THz) radiation. By providing ponderomotive nonlinearity in ionized plasma, the excitation of nonlinearity by laser-based techniques has emerged as a promising way for THz generation. In this paper, the concept of self-focusing of super-Gaussian laser beams has been introduced as an optimal way to generate THz radiation in plasma with a particular outlook toward the effect of applying a magnetic field to the plasma. Our analysis considers expanding the dielectric function and its higher order terms as well as paraxial ray approximation. As can be seen, magnetic field is an appropriate tool to increase the efficiency of THz self-focusing by inducing the resonance effect. |
| format | Article |
| id | doaj-art-e19c4c0725314f08abbfc21472fa9062 |
| institution | DOAJ |
| issn | 2158-3226 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-e19c4c0725314f08abbfc21472fa90622025-08-20T02:56:31ZengAIP Publishing LLCAIP Advances2158-32262024-12-011412125112125112-1010.1063/5.0239903Effect of magnetic field on THz radiation generation by self-focusing of a super Gaussian laser beam in a rippled density plasmaMitra Amouamouha0Farhad Bakhtiari1Bijan Ghafary2Department of Physics, Iran University of Science and Technology, Tehran, IranDepartment of Physics, Iran University of Science and Technology, Tehran, IranDepartment of Physics, Iran University of Science and Technology, Tehran, IranOver the past three decades, much attention has been devoted to improving new methods to generate terahertz (THz) radiation. By providing ponderomotive nonlinearity in ionized plasma, the excitation of nonlinearity by laser-based techniques has emerged as a promising way for THz generation. In this paper, the concept of self-focusing of super-Gaussian laser beams has been introduced as an optimal way to generate THz radiation in plasma with a particular outlook toward the effect of applying a magnetic field to the plasma. Our analysis considers expanding the dielectric function and its higher order terms as well as paraxial ray approximation. As can be seen, magnetic field is an appropriate tool to increase the efficiency of THz self-focusing by inducing the resonance effect.http://dx.doi.org/10.1063/5.0239903 |
| spellingShingle | Mitra Amouamouha Farhad Bakhtiari Bijan Ghafary Effect of magnetic field on THz radiation generation by self-focusing of a super Gaussian laser beam in a rippled density plasma AIP Advances |
| title | Effect of magnetic field on THz radiation generation by self-focusing of a super Gaussian laser beam in a rippled density plasma |
| title_full | Effect of magnetic field on THz radiation generation by self-focusing of a super Gaussian laser beam in a rippled density plasma |
| title_fullStr | Effect of magnetic field on THz radiation generation by self-focusing of a super Gaussian laser beam in a rippled density plasma |
| title_full_unstemmed | Effect of magnetic field on THz radiation generation by self-focusing of a super Gaussian laser beam in a rippled density plasma |
| title_short | Effect of magnetic field on THz radiation generation by self-focusing of a super Gaussian laser beam in a rippled density plasma |
| title_sort | effect of magnetic field on thz radiation generation by self focusing of a super gaussian laser beam in a rippled density plasma |
| url | http://dx.doi.org/10.1063/5.0239903 |
| work_keys_str_mv | AT mitraamouamouha effectofmagneticfieldonthzradiationgenerationbyselffocusingofasupergaussianlaserbeaminarippleddensityplasma AT farhadbakhtiari effectofmagneticfieldonthzradiationgenerationbyselffocusingofasupergaussianlaserbeaminarippleddensityplasma AT bijanghafary effectofmagneticfieldonthzradiationgenerationbyselffocusingofasupergaussianlaserbeaminarippleddensityplasma |