Creator/Principal investigator(s)
David Busto
- Lund University, Department of Physics
Shiyang Zhong
- Lund University, Department of physics
Cord Arnold
- Lund University, Department of Physics
Mathieu Gisselbrecht
- Lund University, Physics Department
Anne L'Huillier
- Lund University, Department of Physics
Description
We investigate the photoionization of helium atoms by attosecond pulse trains generated via high-order harmonic generation in neon gas. In the frequency domain these attosecond pulse trains correspond to a comb of odd harmonics. The wavelength of the infrared field used for high harmonic generation is chosen so that the 39th harmonic is resonant with the 2s2p resonance in helium situated at 60.147 eV. The attosecond pulse trains are overlapped spatially and temporally with a delayed infrared probe pulse with 10 nm bandwidth and a central wavelength of 800nm. Both pulses are focused on an effusive helium gas jet using a toroidal mirror. The resulting photoelectron spectrum is measured using a 2-meter long magnetic bottle electron spectrometer. The experiments consist in measuring the photoelectron spectrum as a function of the delay between the attosecond pulse train and the infrared probe pulse.
The photoelectron spectra exhibit small photoelectron peaks (sidebands) originating from the interference of two photon transitions. These peaks oscillate as a function of the delay between the atto
Language
English
Research principal
Responsible department/unit
Department of Physics
Funding 1
-
Funding agency:
Knut and Alice Wallenberg Foundation
- Funding agency's reference number: 2017.0104
Funding 2
-
Funding agency:
European Research Council
- Funding agency's reference number: 339253
Funding 3
-
Funding agency:
Swedish Research Council
- Funding agency's reference number: 2013-8185
Data contains personal data
No
Busto et al., Probing electronic decoherence with high-resolution attosecond photoelectron interferometry, arXiv:2111.12037
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Associated documentation
Description
The data is acquired using a 2m-long magnetic bottle electron spectrometer. An acceleration voltage of 2V is applied on the permanent magnet and the gas needle and a retarding potential of 34V is applied at the entrance of the flight tube. The design of the MBES is based on the following publication: J. H. Eland et al., Phys. Rev. Lett. 90, 053003 (2003).
The experiments consist in measuring time-of-flight spectra as a function of the delay between the attosecond pulse train and the IR probe f
Version 1
https://doi.org/10.5878/mtfm-b338
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Data format / data structure
Numeric
Creator/Principal investigator(s)
David Busto
- Lund University, Department of Physics
Shiyang Zhong
- Lund University, Department of physics
Cord Arnold
- Lund University, Department of Physics
Mathieu Gisselbrecht
- Lund University, Physics Department
Anne L'Huillier
- Lund University, Department of Physics
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