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

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 (...

Täydet tiedot

Bibliografiset tiedot
Päätekijät: 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
Aineistotyyppi: Journal article
Kieli:English
Julkaistu: 1998
Kuvaus
Yhteenveto: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.