Raman interferometry between autoionizing states to probe ultrafast wavepacket dynamics with high spectral resolution

Abstract

Photoelectron interferometry with femto- and atto-second light pulses is a powerful probe of the fast electron wavepacket dynamics, albeit it has practical limitations on the energy resolution. We show that one can simultaneously obtain both high temporal and spectral resolution by stimulating Raman interferences with one light pulse and monitoring the differential changes in the electron yield in a separate step. Applying this spectroscopic approach to the autoionizing states of argon, we experimentally resolved its electronic composition and time-evolution in exquisite detail. Theoretical calculations show remarkable agreement with the observations and shed light on the light-matter interaction parameters. Using appropriate Raman probing and delayed detection steps, this technique enables highly dfferential probing and control of electron dynamics in complex systems.

arXiv comment5 pages, 4 figures

References in corpus (5)

• Attosecond dynamics through a Fano resonance: Monitoring the birth of a photoelectron
• Photoelectron holographic interferometry to probe the longitudinal momentum offset at the tunnel exit
• Time-frequency representations of autoionization dynamics in helium
• Attosecond two-photon interferometry for doubly excited states of helium
• Quantum Beat Photoelectron Imaging Spectroscopy of Xe in the VUV

Cited by in corpus (2)

• Ultrafast Molecular Frame Quantum Tomography
• Non-resonant Coherent Amplitude Transfer in Attosecond Four-Wave Mixing Spectroscopy