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Meadowlark Optics - Wave Plates 6/24 LB 2024

ETH Zurich Study Offers Insight into 'birth' of Photoelectrons

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A sub-femtosecond study of linear photon momentum transfer during an ionization process, done by a team at ETH Zürich, could provide insight into the “birth” of photoelectrons. Physicists understand how photons transfer their energy to an ion and a photoelectron during multiphoton ionization of an atom. However, the precise details of how light passes its impulse onto matter are still not fully understood. One reason, said the ETH Zürich team, is that changes to the transferred impulse occur during an optical cycle on extremely fast, sub-femtosecond timescales....Read full article

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    Published: December 2019
    Glossary
    quantum
    The term quantum refers to the fundamental unit or discrete amount of a physical quantity involved in interactions at the atomic and subatomic scales. It originates from quantum theory, a branch of physics that emerged in the early 20th century to explain phenomena observed on very small scales, where classical physics fails to provide accurate explanations. In the context of quantum theory, several key concepts are associated with the term quantum: Quantum mechanics: This is the branch of...
    Research & TechnologyeducationEuropeETH Zurichquantumphoton momentum transferphotoelectronsattosecondsattoclockatomic and molecular interactions with photonstime-resolved measurementphysics of photonicsTech Pulse

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