Journal
PHYSICAL REVIEW LETTERS
Volume 128, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.083001
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Funding
- National Science Foundation [PHY 1912455, PHY 1919486]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0010545]
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Photoelectron interferometry with femtosecond and attosecond light pulses provides high temporal and spectral resolution. By stimulating Raman interferences and monitoring the modification of electron yield, we resolved the electronic composition and time evolution of autoionizing states in argon, with remarkable agreement between experimental and theoretical results.
Photoelectron interferometry with femtosecond and attosecond light pulses is a powerful probe of the fast electron wave-packet 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 modification of 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 sensitive probing and control of electron dynamics in complex systems.
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