Characterization of preformed plasmas with an interferometer for ultra-short high-intensity laser-plasma interactions

The evolution of an Al preformed plasma produced by a prepulse was observed before and after the arrival of the main pulse by an interferometer using a femtosecond probe pulse. A central density depression due to the ponderomotive force of the main laser pulse in the preformed plasma with a {/conten...

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Veröffentlicht in:	Applied physics. B, Lasers and optics Lasers and optics, 2004-05, Vol.78 (7-8), p.919-922
Hauptverfasser:	SAGISAKA, A, DAIDO, H, NAKAMURA, S, TAKAGAKI, K, HAZAMA, H, SUZUKI, M, UTSUMI, T, BULANOV, S. V, ESIRKEPOV, T, OGURA, K, ORIMO, S, HAYASHI, Y, NISHIUCHI, M, MORI, M, MATSUKADO, K, FUKUMI, A, LI, Z
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum Density Evolution Femtosecond Interferometers Lasers Plasmas Temporal logic
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Zusammenfassung:	The evolution of an Al preformed plasma produced by a prepulse was observed before and after the arrival of the main pulse by an interferometer using a femtosecond probe pulse. A central density depression due to the ponderomotive force of the main laser pulse in the preformed plasma with a {/content/8RXDQEPBL8AD1N4F/xxlarge8764.gif}100 {/content/8RXDQEPBL8AD1N4F/xxlarge956.gif}m scale length was clearly visible after the main pulse irradiation at an intensity of {/content/8RXDQEPBL8AD1N4F/xxlarge8764.gif}5X10 W/cm. The temporal profiles of the prepulse, characterized by a cross-correlation in conjunction with a precise density profile measurement by an interferometer, contribute to the better understanding of femtosecond laser-matter interactions.
ISSN:	0946-2171 1432-0649
DOI:	10.1007/s00340-004-1447-0