دورية أكاديمية
THz field engineering in two-color femtosecond filaments using chirped and delayed laser pulses
| العنوان: | THz field engineering in two-color femtosecond filaments using chirped and delayed laser pulses |
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| المؤلفون: | Nguyen, A, González de Alaiza Martínez, P, Thiele, I, Skupin, Stefan, Bergé, L |
| المساهمون: | Département de Physique Théorique et Appliquée (DPTA), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre d'Etudes Lasers Intenses et Applications (CELIA), Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Institut Lumière Matière Villeurbanne (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 1367-2630 ; New Journal of Physics ; https://hal.science/hal-01754802Test ; New Journal of Physics, 2018, 20 (3), pp.033026. ⟨10.1088/1367-2630/aaa470⟩. |
| بيانات النشر: | HAL CCSD Open Access Journals |
| سنة النشر: | 2018 |
| المجموعة: | HAL Lyon 1 (University Claude Bernard Lyon 1) |
| مصطلحات موضوعية: | terahertz generation, chirp, plasma, filamentation, wave propagation, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] |
| الوصف: | International audience ; We numerically study the influence of chirping and delaying several ionizing two-color light pulses in order to engineer terahertz (THz) wave generation in air. By means of comprehensive 3D simulations, it is shown that two chirped pulses can increase the THz yield when they are separated by a suitable time delay for the same laser energy in focused propagation geometry. To interpret these results, the local current theory is revisited and we propose an easy, accessible all-optical criterion that predicts the laser-to-THz conversion efficiencies given any input laser spectrum. In the filamentation regime, numerical simulations display evidence that a chirped pulse is able to produce more THz radiation due to propagation effects, which maintain the two colors of the laser field more efficiently coupled over long distances. A large delay between two pulses promotes multi-peaked THz spectra as well as conversion efficiencies above 10 −4 . |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | hal-01754802; https://hal.science/hal-01754802Test; https://hal.science/hal-01754802/documentTest; https://hal.science/hal-01754802/file/Nguyen_2018_New_J._Phys._20_033026.pdfTest |
| DOI: | 10.1088/1367-2630/aaa470 |
| الإتاحة: | https://doi.org/10.1088/1367-2630/aaa470Test https://hal.science/hal-01754802Test https://hal.science/hal-01754802/documentTest https://hal.science/hal-01754802/file/Nguyen_2018_New_J._Phys._20_033026.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.942977DB |
| قاعدة البيانات: | BASE |
| DOI: | 10.1088/1367-2630/aaa470 |
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