Scientific Results

Observation of solid-density laminar plasma transparency to intense 30 femtosecond laser pulses

Year: 1997

Authors: Giulietti D., Gizzi LA., Giulietti A., Macchi A., Teychenne D., Chessa P., Rousse A., Cheriaux G., Chambaret JP., Darpentigny G.

Autors Affiliation: CNR,Ist. Fis. Atom. & Mol., via giardino 7, I-56127 Pisa, Italy; ENSTA, Lab Opt Appliquee, F-91120 Palaiseau, France; Univ Pisa, Dipartimento Fis, Pisa, Italy; Scuola Normale Superiore di Pisa, Pisa, Italy

Abstract: Near total transmission of 30 fs laser pulses through 0.1 mu m plastic foil targets has been observed for the first time at an intensity of 3 x 10(18) W/cm(2) in absence of precursor plasma. This level of transmittivity is far above the level predicted by current theoretical models or numerical simulations. The transmittivity was found to drop by 40 times at an intensity of 4 x 10(17) W/cm(2) and was within the experimental background level at 5 x 10(16) W/cm(2). Our measurements strongly suggest a new mechanism of propagation of electromagnetic waves through overdense plasmas.


Volume: 79 (17)      Pages from: 3194  to: 3197

KeyWords: 2nd harmonic emission; target;
DOI: 10.1103/PhysRevLett.79.3194

Citations: 69
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