Energy deposition of single femtosecond filaments in the atmosphere

Energy deposition of single femtosecond filaments in the atmosphere

We present spatially resolved measurements of energy deposition into atmospheric air by femtosecond laser filaments. Single filaments formed with varying laser pulse energy and pulsewidth were examined using longitudinal interferometry, sonographic probing, and direct energy loss measurements. We me...

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Veröffentlicht in:Optics letters 2016-08, Vol.41 (16), p.3908-3911
Hauptverfasser: Rosenthal, E W, Jhajj, N, Larkin, I, Zahedpour, S, Wahlstrand, J K, Milchberg, H M
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Sprache:eng
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Zusammenfassung:We present spatially resolved measurements of energy deposition into atmospheric air by femtosecond laser filaments. Single filaments formed with varying laser pulse energy and pulsewidth were examined using longitudinal interferometry, sonographic probing, and direct energy loss measurements. We measure peak and average energy absorption of ∼4  μJ/cm and ∼1  μJ/cm for input pulse powers up to ∼6 times the critical power for self-focusing.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.41.003908