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Attosecond Science

UBC Physics & Astronomy Department Colloquium on March 25, 2021. Presented by Paul Corkum (U Ottawa). https://phas.ubc.ca/attosecond-science An electron that multiphoton ionizes is immediately subject to the light's electric field that will control its short-term future. This control enables a gas of atoms to produce intense VUV or soft X-ray beams. Since we can precisely control the infrared beam, we can synthesize attosecond soft X-ray pulses - pulses that are the shortest controlled events ever systematically produced. For a complex atom (such as xenon), the recollision electron shares its energy in any multi-electron interaction. Measuring the energy share encodes multielectron dynamics such as the Fano resonance structure in helium and the Giant Plasmon resonance in Xenon.