Frequency-domain interferometry for the determination of time delay between two extreme-ultraviolet wave packets generated by a tandem undulator
Year: 2023
Type: article
Abstract: Synchrotron radiation, emitted by relativistic electrons traveling in a magnetic field, has poor temporal coherence. However, recent research has proved that time-domain interferometry experiments, which were thought to be enabled by only lasers of excellent temporal coherence, can be implemented with synchrotron radiation using a tandem undulator. The radiation generated by the tandem undulator comprises pairs of light wave packets, and the longitudinal coherence within a light wave packet pair is used to achieve time-domain interferometry. The time delay between two light wave packets, formed by a chicane for the electron trajectory, can be adjusted in the femtosecond range by a standard synchrotron technology. In this study, we show that frequency-domain spectra of the tandem undulator radiation exhibit fringe structures from which the time delay between a light wave packet pair can be determined with accuracy on the order of attoseconds. The feasibility and limitations of the frequency-domain interferometric determination of the time delay are examined.
Source: Scientific Reports
Institutions: University of Toyama, SAGA Light Source, Institute for Molecular Science, Hiroshima University, The Graduate University for Advanced Studies, SOKENDAI, Nagoya University Synchrotron Radiation Research Center, Nagoya University, University of Science and Technology of China, National Synchrotron Radiation Laboratory, Research Institute for Synchrotron Radiation Science, Hiroshima University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,390
Awards: G3478307218, G4233554412, G4821156250, Soft X-ray-induced electron transfer in parallel circuit molecular condition assembled on gold nanoparticles, Developments and Applications of Vortex Synchrotron Radiation, Development of phase structure control of synchrotron radiation, Inner-shell electron dynamics studied by ultrafast soft x-ray photoelectron spectroscopy, G6113165255, Photoexcitation of rare gas atoms by optical vortex beam studied by laser-induced fluorescence, G6900411680, Search for innovative optical technologies utilizing coherence of broadband incoherent synchrotron radiation, Controlling XUV multi-photon ionization of atoms by intense IR laser pulses, G8693618815
OpenAlex ID: W4381950662