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Subpicosecond, electromagnetic pulses from intense laser-plasma interaction

Journal Article · · Physical Review Letters; (United States)
; ; ; ;  [1]
  1. Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)
Laser pulses with a power of 10[sup 12] W and a duration of 10[sup [minus]13] s were focused onto both gas and solid targets. Strong emission of pulsed radiation at terahertz frequencies was observed from the resulting plasmas. The most intense radiation was detected from solid density targets and was correlated with the emission of MeV x rays and electrons. Results indicate that radiative processes in such plasmas are driven by ponderomotively induced space charge fields in excess of 10[sup 8] V/cm. This work constitutes the first direct observation of a laser-induced wake field.
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
5793618
Journal Information:
Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:17; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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