|Title||Effect of attochirp on attosecond streaking time delay in photoionization of atoms|
|Publication Type||Journal Article|
|Year of Publication||2017|
|Authors||Goldsmith, C, Jaroń-Becker, A, Becker, A|
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
We present a theoretical analysis of the effect of the attochirp on the streaking time delay, intrinsic to photoionization of an atom by an attosecond laser pulse at extreme ultraviolet wavelengths superposed by a femtosecond streaking pulse. To this end, we determine the expectation value of the delay in a chirped pulse using a recently developed model formula. Results of our calculations show that the attochirp can be relevant for photoemission from the 3p shell in argon atom at frequencies near the Cooper minimum, while it is negligible if the photoionization cross section as a function of frequency varies smoothly.
|Short Title||J. Phys. B: At. Mol. Opt. Phys.|