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Direct measurement of the temporal structure of narrow bandwidth femtosecond XUV using ultra-short laser via differential photoelectron energy spectrum
Author(s) -
Ge Yu-Cheng,
Yuanjing Li,
Kejun Kang
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.2669
Subject(s) - femtosecond , extreme ultraviolet , laser , attosecond , bandwidth (computing) , atomic physics , differential (mechanical device) , materials science , optics , physics , ultrashort pulse , computer science , telecommunications , thermodynamics
A method is introduced to directly measure the temporal structure of femtosecond XUV which has a narrow bandwidth using sub_picosecond duration laser. Calculati on shows that such a temporal structure can be reconstructed from the differenti al photoelectron energy spectrum excited by XUV or x ray, modulated by a laser field and measured at 90° or 0° with respect to the linear laser polarizatio n. The effectiveness and nonlinearity of the method are investigated. Energy res olution and bin(s) are important parameters for measurement and calculation. The method has a broad temporal measurement range and can be used for researches of dynamic processes associated with atomic motions.

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