Strong-Field-Assisted Measurement of Near-Fields and Coherent Control of Photoemission at Nanometric Metal Tips

Beitrag in einem Sammelwerk
(Buchkapitel)


Details zur Publikation

Autor(en): Förster M, Paschen T, Thomas S, Krüger M, Hommelhoff P
Titel Sammelwerk: Progress in Ultrafast Intense Laser Science
Verlag: Springer
Jahr der Veröffentlichung: 2017
Band: XIII
Seitenbereich: 143-155


Abstract


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.



FAU-Autoren / FAU-Herausgeber

Förster, Michael Dr.
Lehrstuhl für Laserphysik
Hommelhoff, Peter Prof. Dr.
Lehrstuhl für Laserphysik
Krüger, Michael
Lehrstuhl für Laserphysik
Paschen, Timo
Lehrstuhl für Laserphysik
Thomas, Sebastian
Lehrstuhl für Laserphysik


Zitierweisen

APA:
Förster, M., Paschen, T., Thomas, S., Krüger, M., & Hommelhoff, P. (2017). Strong-Field-Assisted Measurement of Near-Fields and Coherent Control of Photoemission at Nanometric Metal Tips. In Progress in Ultrafast Intense Laser Science (pp. 143-155). Springer.

MLA:
Förster, Michael, et al. "Strong-Field-Assisted Measurement of Near-Fields and Coherent Control of Photoemission at Nanometric Metal Tips." Progress in Ultrafast Intense Laser Science Springer, 2017. 143-155.

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Zuletzt aktualisiert 2018-11-08 um 01:42