Alex B Borisov et al 2003 J. Phys. B: At. Mol. Opt. Phys. 36 L285 doi:10.1088/0953-4075/36/17/104
Saturated multikilovolt x-ray amplification with Xe clusters: single-pulse observation of Xe(L) spectral hole burning
FREE ARTICLEAlex B Borisov1, Jack Davis2, Xiangyang Song1, Yevgeniya Koshman1,3, Yang Dai3, Keith Boyer1 and Charles K Rhodes1,3,4,5,6
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Single-pulse measurements of spectral hole burning of Xe(L) 3d → 2p hollow atom transition arrays observed from a self-trapped plasma channel provide new information on the dynamics of saturated amplification in the λ ~ 2.8–2.9 Å region. The spectral hole burning on transitions in the Xe34+ and Xe35+ arrays reaches full suppression of the spontaneous emission and presents a corresponding width Δ
ωx ~ = 60 eV, a value adequate for efficient amplification of multikilovolt x-ray pulses down to a limiting length τx ~ 30 as. The depth of the suppression at 2.86 Å indicates that the gain-to-loss ratio is ≥10. An independent determination of the x-ray pulse energy from damage produced on the surface of a Ti foil in the far field of the source gives a pulse energy of 20–30 µJ, a range that correlates well with the observation of the spectral hole burning and indicates an overall extraction efficiency of ~10%.
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Issue 17 (14 September 2003)
Received 31 July 2003
Published 19 August 2003
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Saturated multikilovolt x-ray amplification with Xe clusters: single-pulse observation of Xe(L) spectral hole burning
Alex B Borisov et al 2003 J. Phys. B: At. Mol. Opt. Phys. 36 L285
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