Dienstbier P, Paschen T, Hommelhoff P (2021)
Publication Language: English
Publication Type: Journal article, Letter
Publication year: 2021
Book Volume: 54
Article Number: 134002
Journal Issue: 13
URI: https://iopscience.iop.org/article/10.1088/1361-6455/ac0294
We demonstrate coherent control of photoemission from a gold needle tip using a two-color laser field. The relative phase between a fundamental field and its second harmonic imprints a strong modulation on the emitted photocurrent with up to 96.5% visibility. The visibility as a function of the second harmonic intensity can be described by three interfering quantum pathways. Increasing the bias voltage applied to the tip reduces the maximum achievable visibility and modifies the weights of the involved pathways. Simulations based on the time-dependent Schrödinger equation reproduce the characteristic cooperative signal and its dependence on the second harmonic intensity, which further confirms the involvement of three emission pathways.
APA:
Dienstbier, P., Paschen, T., & Hommelhoff, P. (2021). Two-color coherent control in photoemission from gold needle tips. Journal of Physics B: Atomic, Molecular and Optical Physics, 54(13). https://doi.org/10.1088/1361-6455/ac0294
MLA:
Dienstbier, Philip, Timo Paschen, and Peter Hommelhoff. "Two-color coherent control in photoemission from gold needle tips." Journal of Physics B: Atomic, Molecular and Optical Physics 54.13 (2021).
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