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

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 in...

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Bibliographic Details
Published inOptics letters Vol. 37; no. 24; p. 5130
Main Authors Banici, Romeo A, Cojocaru, Gabriel V, Ungureanu, Razvan G, Dabu, Razvan, Ursescu, Daniel, Stiel, Holger
Format Journal Article
LanguageEnglish
Published United States 15.12.2012
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Summary: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.
ISSN:1539-4794
DOI:10.1364/OL.37.005130