Plasma Luminescence from Femtosecond Filaments in Air: Evidence for Impact Excitation with Circularly Polarized Light Pulses | Zendy

Sergey Mitryukovskiy | Zendy; Yi Liu | Zendy; Pengji Ding | Zendy; Aurélien Houard | Zendy; A. Couairon | Zendy; A. Mysyrowicz | Zendy

Open Access

Plasma Luminescence from Femtosecond Filaments in Air: Evidence for Impact Excitation with Circularly Polarized Light Pulses

Author(s) -

Sergey Mitryukovskiy,

Yi Liu,

Pengji Ding,

Aurélien Houard,

A. Couairon,

A. Mysyrowicz

Publication year - 2015

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.114.063003

Subject(s) - luminescence , femtosecond , excited state , atomic physics , excitation , laser , circular polarization , physics , polarization (electrochemistry) , electron , materials science , optics , chemistry , nuclear physics , quantum mechanics , microstrip

International audienceFilaments produced in air by intense femtosecond laser pulses emit UV luminescence from excited N2 and N+2 molecules. We report on a strong dependence at high intensities (I≥1.4×1014 W/cm2) of this luminescence with the polarization state of the incident laser pulses. We attribute this effect to the onset of new impact excitation channels from energetic electrons produced with circularly polarized laser pulses above a threshold laser intensity

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