In this work, we reveal that when using femtosecond pump pulses, one has access to a different regime, where the peak power inside the MM fiber may reach and even surpass the critical power Pcr for catastrophic self-focusing (this is about 10 MW in fused- silica). When these peak power levels are reached, the propagating light beam undergoes a so-called filamentation phenomenon, leading to the so-called conical emission (CE)]. In our experiments, we report for the first time the formation of a supercontinuum spiral emission (SSE), where the spectral components of the output beam are spatially separated in the far-field emitted at the fiber output.
Observation of supercontinuum spiral emission in optical fibers / Mangini, F.; Ferraro, M.; Zitelli, M.; Niang, A.; Tonello, A.; Couderc, V.; Wabnitz, S.. - 243:(2020), p. 17003. ((Intervento presentato al convegno Europhoton 2020 tenutosi a Online only [10.1051/epjconf/202024317003].
Titolo: | Observation of supercontinuum spiral emission in optical fibers | |
Autori: | ||
Data di pubblicazione: | 2020 | |
Citazione: | Observation of supercontinuum spiral emission in optical fibers / Mangini, F.; Ferraro, M.; Zitelli, M.; Niang, A.; Tonello, A.; Couderc, V.; Wabnitz, S.. - 243:(2020), p. 17003. ((Intervento presentato al convegno Europhoton 2020 tenutosi a Online only [10.1051/epjconf/202024317003]. | |
Handle: | http://hdl.handle.net/11573/1446505 | |
Appartiene alla tipologia: | 04b Atto di convegno in volume |
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Mangini_Observation_2020.pdf | Versione editoriale (versione pubblicata con il layout dell'editore) | ![]() | Open Access Visualizza/Apri |