期刊
APPLIED PHYSICS LETTERS
卷 96, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3442510
关键词
chirp modulation; plasma diagnostics; plasma production by laser
The dynamics of ultrashort laser plasmas demand single shot temporal measurements on fast time scales. We describe a method to record the plasma expansion on picosecond (ps) timescales continuously over hundreds of ps, in single shot. The method uses the chirp of a Ti:sapphire laser as a time-resolved optical diagnostic tool. Using this technique, the evolution of the plasma expansion had been recorded with ps time resolutions, by probing with a chirped laser pulse of 200 ps duration. A peak expansion velocity of 1.8x10(7) cm/s is observed and its evolution in time is obtained for similar to 300 ps. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3442510]
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