Circular holographic ionization-phase meter

Abstract

We propose an attosecond XUV-pump IR-probe photoionization protocol that employs pairs of counter-rotating consecutive harmonics and angularly resolved photoelectron detection, thereby providing direct measurement of ionization phases. The present method, which we call circular holographic ionization-phase meter (CHIP), gives also access to the phase of photoemission amplitudes of even-parity continuum states from a single time-delay measurement, since the relative phase of one- and two-photon ionization pathways is imprinted in the photoemission anisotropy. The method is illustrated with \emph{ab initio} simulations of photoionization via autoionizing resonances in helium. The rapid phase excursion in the transition amplitude to both the dipole-allowed $(2s2p{)}^1$P${}^{\mathrm{o}}$ and the dipole-forbidden $(2p^2{)}^1$D${}^{\mathrm{e}}$ states are faithfully reproduced.

arXiv comment6 pages, 5 figures

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Cited by in corpus (9)

• A new method for measuring angle-resolved phases in photoemission
• Dialogue on analytical and ab initio methods in attoscience
• Attosecond Ionization Time Delays in Strong-Field Physics
• Phase delays in $\omega -2\omega$ above-threshold ionization
• Separation of Wigner and Continuum-continuum Delays by Mirror-symmetry-broken Attosecond Interferometry
• Angle-resolved time delays for shake-up ionization of helium
• Towards the complete phase profiling of attosecond wave packets
• Reconstruction of attosecond beating by interference of two-photon interband transitions in solids
• General properties of the RABBITT at parity mixing conditions