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17 April 2024 |
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Article overview
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Attosecond interferometry with self-amplified spontaneous emission of a free-electron laser | Sergey Usenko
; Andreas Przystawik
; Markus Jakob
; Leslie Lamberto Lazzarino
; Günter Brenner
; Sven Toleikis
; Christian Haunhorst
; Detlef Kip
; Tim Laarmann
; | Date: |
14 Feb 2017 | Abstract: | Light-phase-sensitive techniques such as coherent multidimensional
spectroscopy are well-established in a broad spectral range, already spanning
from radio-frequencies in nuclear magnetic resonance spectroscopy to nonlinear
optics with table-top lasers in the visible to ultraviolet spectral range.
Here, the ability to tailor the phases of electromagnetic waves with high
precision is essential. In the present contribution light-phase control on the
attosecond timescale (1 as = 10$^{-18}$ s) is achieved in a Michelson-type
all-reflective interferometric autocorrelator generating coherent pulse
replicas in the limit of short wavelength. The resulting fringe contrast
monitors the field interference when varying the relative phase within the
optical cycle, i.e. the free-electron laser (FEL) light wave oscillation with a
period of 129 $pm$ 4 as at a wavelength of 38 nm. The successful transfer of a
powerful table-top method towards FEL science and technology paves the way
towards utilization of advanced nonlinear methodologies even at partially
coherent soft X-ray FEL sources making use of self-amplified spontaneous
emission. | Source: | arXiv, 1702.4188 | Services: | Forum | Review | PDF | Favorites |
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