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Pump energy reduction for a high gain Ag X-ray laser using one long and two short pump pulses

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Romeo A. Banici, Gabriel V. Cojocaru, Razvan G. Ungureanu, Razvan Dabu, Daniel Ursescu, and Holger Stiel

Editorial: Optics Letters, 37 (24), p.5130-5132, 2012.

Rezumat:


A pump scheme with one long and two short pump pulses is proposed, in a grazing incidence pumping x-ray laser (XRL) configuration. A 360 ps long pulse, prepares a plasma in a low charge state. Then, an initial short pulse ionizes the plasma to an optimal charge state, while the second short pulse induces strong collisional excitation in the gain region. With only 200 mJ of pump energy on target, a compact Ag XRL at 13.9 nm with a gain coefficient of 55  cm−1 was achieved.

Cuvinte cheie: x-ray lasers, multiple pulses generation, laser produced plasma, plasma ionization dynamics

URL: http://dx.doi.org/10.1364/OL.37.005130