Self-phase modulation in various regimes of intense laser-plasma interactions
Autori: Giulietti A., Giulietti D.
Affiliazione autori: Istituto Nazionale di Ottica, CNR, Sezione
Abstract: Creation of plasmas by intense laser pulses and consequent laser-plasma interactions involve highly non-linear processes. In particular, a variation of the refractive index induced by the laser action turns into a self-phase modulation (SPM) of the laser field. This effect, already observed with nanosecond laser pulses, achieves striking evidence with ultra-short pulses whose intensity can produce index changes in a time as short as a single optical cycle. In this condition, spectral modifications of the laser pulse produced by SPM may strongly modify the laser-plasma interaction. At the same time, the spectral analysis of the transmitted and scattered laser radiation gives valuable information on a variety of processes occurring in the plasma. In this paper we simply consider a few results, which can be attributed to SPM, with the aim of comparing nanosecond and sub-picosecond laser interaction regimes at moderate laser intensities.
Giornale/Rivista: JOURNAL OF PLASMA PHYSICS
Volume: 81 (6) Da Pagina: 495810608-1 A: 495810608-15
Maggiori informazioni: The authors acknowledge their colleagues\’ contributions from ILIL-INO@CNR Campus, Pisa, Italy, SLIC@CEA, Saclay, France, LOA/Ensta@Ecole Polytechnique, Palaiseau, France, Central Laser Facility@RAL, Didcot, UK and from the INFN Strategic Project PLASMONX@LNF, Frascati, Italy. They also acknowledge financial support from the CNR-funded Italian Research Network ELI-Italy and from the INFN-funded (CN5) project \’Gamma-ray emitter from self-injected Thomson scattering\’ (g-RESIST). The work at ILIL was carried out in the framework of the CNR High Field Photonics Unit (MD.P03.034).Parole chiavi: BRILLOUIN-SCATTERING; TRANSPARENCY; TRANSMISSION; LIGHTDOI: 10.1017/S0022377815001385Citazioni: 4dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2021-09-19Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui