Strong-field-assisted measurement of near-fields and coherent control of photoemission at nanometric metal tips

M. Förster, T. Paschen, S. Thomas, Michael Krueger, P. Hommelhoff

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Metal nanotips are an ideal testbed for ultrafast and strong-field physics at solids due to the superb control they allow over their very apex and the near-field at this apex that enhances an incident laser field. Particular attention has recently been devoted to the study of laser-induced electron emission from nanotips, where an enhanced fundamental understanding contributes to the implementation of nanotips as a source of femtosecond electron pulses. In this chapter we present photoemission studies at nanotips illuminated with femtosecond lasers. We demonstrate a new technique to measure the strength of near-fields at nanostructures by using our knowledge of the occurring strong-field physics. Electrons rescattering with the surface of the nanotip after emission give access to the prevalent near-field intensity on the nanometer scale. Our measurements fit well with independent simulations of Maxwell’s equations. In the second part we show that by employing a synthesized light field of a fundamental and a second harmonic laser pulse we achieve almost perfect coherent control of the photoemission process. We demonstrate that we can interpret our findings in terms of interfering quantum pathways.

Original languageEnglish
Title of host publicationSpringer Series in Chemical Physics
Subtitle of host publicationProgress in Ultrafast Intense Laser Science XIII
EditorsK. Yamanouchi, W. Hill III, G. Paulus
Number of pages13
ISBN (Electronic)9783319648408
StatePublished - 2017
Externally publishedYes

Publication series

NameSpringer Series in Chemical Physics

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry


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