100 MHz frequency comb for low-intensity multi-photon studies

• Verfasst von: Nauta, Janko [VerfasserIn]
• Verfasst von: Oelmann, Jan-Hendrik [VerfasserIn]
• Titel: 100 MHz frequency comb for low-intensity multi-photon studies
• Titelzusatz: intra-cavity velocity-map imaging of xenon
• Verf.angabe: J. Nauta, J.-H. Oelmann, A. Ackermann, P. Knauer, R. Pappenberger, A. Borodin, I.S. Muhammad, H. Ledwa, T. Pfeifer and J.R. Crespo López-Urrutia
• E-Jahr: 2020
• Jahr: 6 April 2020
• Umfang: 4 S.
• Fussnoten: Gesehen am 15.07.2020
• Titel Quelle: Enthalten in: Optics letters
• Ort Quelle: Washington, DC : Soc., 1977
• Jahr Quelle: 2020
• Band/Heft Quelle: 45(2020), 8, Seite 2156-2159
• ISSN Quelle: 1539-4794
• DOI: doi:10.1364/OL.389327
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Atoms
• Sach-SW: Electric fields
• Sach-SW: Femtosecond pulses
• Sach-SW: Frequency combs
• Sach-SW: Laser systems
• Sach-SW: Multiphoton ionization
• K10plus-PPN: 1724843400

Abstract

We raise the power from a commercial 10 W frequency comb inside an enhancement cavity and perform multi-photon ionization of gas-phase atoms at 100 MHz for the first time, to the best of our knowledge. An intra-cavity velocity-map-imaging setup collects electron-energy spectra of xenon at rates several orders of magnitude higher than those of conventional laser systems. Consequently, we can use much lower intensities ${\sim}{{10}^{12}} \;{\rm W}/{{\rm cm}^2} $∼1012W/cm2 without increasing acquisition times above just a few seconds. The high rate and coherence of the stabilized femtosecond pulses are known to be transferred to the actively stabilized cavity and will allow studying purely perturbative multi-photon effects, paving the road towards a new field of precision tests in nonlinear physics.