Role of the plasma scale length in the harmonic generation from solid targets

Role of the plasma scale length in the harmonic generation from solid targets

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We have investigated the generation of high harmonics from the interaction of 150 fsec, 790 nm, and 395 nm laser pulses with solid targets. Experiments are presented that demonstrate a strong dependence of the conversion efficiency on the temporal pulse shape and the resulting density scale length (...

תיאור מלא

מידע ביבליוגרפי
Main Authors: Zepf, M, Tsakiris, G, Pretzler, G, Watts, I, Chambers, D, Norreys, P, Andiel, U, Dangor, A, Eidmann, K, Gahn, C, Machacek, A, Wark, J, Witte, K
פורמט: Journal article
שפה:English
יצא לאור: 1998
תיאור
סיכום:We have investigated the generation of high harmonics from the interaction of 150 fsec, 790 nm, and 395 nm laser pulses with solid targets. Experiments are presented that demonstrate a strong dependence of the conversion efficiency on the temporal pulse shape and the resulting density scale length (L/λ) of the preformed plasma. The highest conversion efficiencies are achieved for short density scale lengths (L/λ ≤ 0.4), which result from high contrast ratio pulse interactions.

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