CONTRASTED BEHAVIOR OF STARK-INDUCED RESONANCES IN MULTIPHOTON IONIZATION OF KRYPTON

被引:14
作者
MEVEL, E [1 ]
BREGER, P [1 ]
TRAINHAM, R [1 ]
PETITE, G [1 ]
AGOSTINI, P [1 ]
CHAMBARET, JP [1 ]
MIGUS, A [1 ]
ANTONETTI, A [1 ]
机构
[1] ECOLE POLYTECH,ENSTA,OPT APPL LAB,F-91120 PALAISEAU,FRANCE
关键词
D O I
10.1088/0953-4075/25/17/001
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Electron energy spectra from multiphoton ionization of krypton with 617 nm, 70 fs pulses have been recorded over a large intensity range. Near the appearance intensity, the spectra display Stark-induced resonances with s and d states. Up to about 8 x 10(13) W cm-2, the spectra broaden and the structures are progressively washed out. Above this intensity, a strong resonance emerges, corresponding to the 4f state for which the static detuning is 2.94 eV, a value larger than the photon energy. The influence of a large static detuning and populations of excited states with shifts different from the threshold shift are discussed.
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页码:L401 / L406
页数:6
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