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/lambda) of the preformed plasma. The highest conversion efficiencies are achieved for short density scale lengths (L/lambda less than or equal to 0.4), which result from high contrast ratio pulse interactions. [S1063-651X(98)50211-5].
|Number of pages||4|
|Journal||Physical Review E|
|Issue number||5 SUPPL. A|
|Publication status||Published - 1998|
ASJC Scopus subject areas
- Mathematical Physics
- Physics and Astronomy(all)
- Condensed Matter Physics
- Statistical and Nonlinear Physics
Zepf, M., Tsakiris, G. D., Pretzler, G., Watts, I., Chambers, D. M., Norreys, P. A., Andiel, U., Dangor, A. E., Eidmann, K., Gahn, C., Machacek, A., Wark, J. S., & Witte, K. (1998). Role of the plasma scale length in the harmonic generation from solid targets. Physical Review E, 58(5 SUPPL. A), R5253-R5256.