The spectrum broadening of a single-cycle terahertz pulse caused by phase self-modulation in a nonlinear medium and the spectrum of radiation generated in its field at tripled frequencies
When the number of oscillations in an optical pulse decreases, the emission spectrum generated at triple frequencies and the spectrum of the fundamental pulse, broadened due to phase self-modulation during propagation in a medium with cubic nonlinearity, begin to overlap. This work demonstrates that...
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Samara National Research University
2024-02-01
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| Series: | Компьютерная оптика |
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| Online Access: | https://www.computeroptics.ru/eng/KO/Annot/KO48-1/480107e.html |
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| author | I.R. Artser M.V. Melnik A.N. Tsypkin S.A. Kozlov |
| author_facet | I.R. Artser M.V. Melnik A.N. Tsypkin S.A. Kozlov |
| author_sort | I.R. Artser |
| collection | DOAJ |
| description | When the number of oscillations in an optical pulse decreases, the emission spectrum generated at triple frequencies and the spectrum of the fundamental pulse, broadened due to phase self-modulation during propagation in a medium with cubic nonlinearity, begin to overlap. This work demonstrates that the overlap magnitude of the spectrum broadening for a single-period terahertz pulse, caused by the emission of triple frequencies and phase self-modulation of the fundamental pulse, is |s| = 0.85. The complex spectra are phase-shifted by p, which mutually weakens these nonlinear effects. For a single-period pulse, the attenuation coefficient is 7.7. The frequency-dependent inhomogeneity of mutual attenuation of nonlinear effects results in the absence of radiation at the triple frequency relative to the frequency of the maximum spectrum of the single-period wave in the nonlinear medium, while the maximum spectrum of the generated high-frequency radiation shifts to quadrupled frequencies. Thus, for terahertz waves with a small number of oscillations, new possibilities for controlling their parameters during nonlinear processes in optical media open up. |
| format | Article |
| id | doaj-art-fdb41150eba14dcb997aabacbe6da4d6 |
| institution | Kabale University |
| issn | 0134-2452 2412-6179 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | Samara National Research University |
| record_format | Article |
| series | Компьютерная оптика |
| spelling | doaj-art-fdb41150eba14dcb997aabacbe6da4d62025-02-04T05:11:07ZengSamara National Research UniversityКомпьютерная оптика0134-24522412-61792024-02-014801616710.18287/2412-6179-CO-1299The spectrum broadening of a single-cycle terahertz pulse caused by phase self-modulation in a nonlinear medium and the spectrum of radiation generated in its field at tripled frequenciesI.R. Artser0M.V. Melnik1A.N. Tsypkin2S.A. Kozlov3ITMO UniversityITMO UniversityITMO UniversityITMO UniversityWhen the number of oscillations in an optical pulse decreases, the emission spectrum generated at triple frequencies and the spectrum of the fundamental pulse, broadened due to phase self-modulation during propagation in a medium with cubic nonlinearity, begin to overlap. This work demonstrates that the overlap magnitude of the spectrum broadening for a single-period terahertz pulse, caused by the emission of triple frequencies and phase self-modulation of the fundamental pulse, is |s| = 0.85. The complex spectra are phase-shifted by p, which mutually weakens these nonlinear effects. For a single-period pulse, the attenuation coefficient is 7.7. The frequency-dependent inhomogeneity of mutual attenuation of nonlinear effects results in the absence of radiation at the triple frequency relative to the frequency of the maximum spectrum of the single-period wave in the nonlinear medium, while the maximum spectrum of the generated high-frequency radiation shifts to quadrupled frequencies. Thus, for terahertz waves with a small number of oscillations, new possibilities for controlling their parameters during nonlinear processes in optical media open up.https://www.computeroptics.ru/eng/KO/Annot/KO48-1/480107e.htmlterahertz pulse radiationphase self-modulationgeneration of triple frequency radiationspectrum overlap magnitudemutual attenuation coefficient of nonlinear effects |
| spellingShingle | I.R. Artser M.V. Melnik A.N. Tsypkin S.A. Kozlov The spectrum broadening of a single-cycle terahertz pulse caused by phase self-modulation in a nonlinear medium and the spectrum of radiation generated in its field at tripled frequencies Компьютерная оптика terahertz pulse radiation phase self-modulation generation of triple frequency radiation spectrum overlap magnitude mutual attenuation coefficient of nonlinear effects |
| title | The spectrum broadening of a single-cycle terahertz pulse caused by phase self-modulation in a nonlinear medium and the spectrum of radiation generated in its field at tripled frequencies |
| title_full | The spectrum broadening of a single-cycle terahertz pulse caused by phase self-modulation in a nonlinear medium and the spectrum of radiation generated in its field at tripled frequencies |
| title_fullStr | The spectrum broadening of a single-cycle terahertz pulse caused by phase self-modulation in a nonlinear medium and the spectrum of radiation generated in its field at tripled frequencies |
| title_full_unstemmed | The spectrum broadening of a single-cycle terahertz pulse caused by phase self-modulation in a nonlinear medium and the spectrum of radiation generated in its field at tripled frequencies |
| title_short | The spectrum broadening of a single-cycle terahertz pulse caused by phase self-modulation in a nonlinear medium and the spectrum of radiation generated in its field at tripled frequencies |
| title_sort | spectrum broadening of a single cycle terahertz pulse caused by phase self modulation in a nonlinear medium and the spectrum of radiation generated in its field at tripled frequencies |
| topic | terahertz pulse radiation phase self-modulation generation of triple frequency radiation spectrum overlap magnitude mutual attenuation coefficient of nonlinear effects |
| url | https://www.computeroptics.ru/eng/KO/Annot/KO48-1/480107e.html |
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