Chirped attosecond photoelectron spectroscopy

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Journal titlePhysical Review Letters
Article number63002
SubjectBandwidth; Coherent light; Delay circuits; Photoionization; Chirped attosecond photoelectron spectroscopy; Chirped pulses; Coherent superposition; Photoelectron spectroscopy
AbstractWe study analytically the photoionization of a coherent superposition of electronic states and show that chirped pulses can measure attosecond time scale electron dynamics just as effectively as transform-limited attosecond pulses of the same bandwidth. The chirped pulse with a frequency-dependent phase creates the interfering photoelectron amplitudes that measure the electron dynamics. We show that at a given pump-probe time delay the differential asymmetry oscillates as a function of photoelectron energy. Our results suggest that the important parameter for attosecond science is not the pulse duration, but the bandwidth of phased radiation.
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AffiliationNational Research Council Canada
Peer reviewedYes
NPARC number21276193
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Record identifierfe5615bb-e8a5-4e00-95ce-c9fde455f843
Record created2015-09-28
Record modified2016-05-09
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