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Applied Physics Letters / Volume 96 / Issue 22 / PLASMAS AND ELECTRICAL DISCHARGES

Appl. Phys. Lett. 96, 221503 (2010); http://dx.doi.org/10.1063/1.3442510 (3 pages)

Chirped pulse shadowgraphy for single shot time resolved plasma expansion measurements

Y. B. S. R. Prasad, S. Barnwal, P. A. Naik, J. A. Chakera, R. A. Khan, and P. D. Gupta

Laser Plasma Division, RRCAT, Indore, 452 013 Madhya Pradesh, India

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(Received 23 March 2010; accepted 11 May 2010; published online 2 June 2010)

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 1.8×107 cm/s is observed and its evolution in time is obtained for ∼ 300 ps.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

chirp modulation, plasma diagnostics, plasma production by laser

PACS

  • 52.70.Kz

    Optical (ultraviolet, visible, infrared) measurements

  • 52.50.Jm

    Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3442510

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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