Dienstbier P, Paschen T, Hommelhoff P (2021)
Publication Language: English
Publication Type: Journal article, Letter
Publication year: 2021
Book Volume: 10
Pages Range: 3717–3721
Article Number: 20210242
URI: https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0242/html
Open Access Link: https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0242/html
We demonstrate coherent control in photoemission from a gold needle tip using an ω − 2ω field composed of strong few-cycle laser pulses with a nearfield intensity of ∼4 TW/cm2. We obtain the nearfield intensity from electron energy spectra, showing the tell-tale plateau of field-driven electron rescattering at the metal surface induced by the fundamental field. Changing the relative phase between the fundamental field centered at 1560 nm and its second harmonic modulates the total emitted photocurrent with visibilities of up to 80% despite the strong and broadband excitation of the plasmonic material. Our work combines a two-color coherent control scheme and strong-field physics enabled by a nanoplasmonic emitter.
APA:
Dienstbier, P., Paschen, T., & Hommelhoff, P. (2021). Coherent control at gold needle tips approaching the strong-field regime. Nanophotonics, 10, 3717–3721. https://doi.org/10.1515/nanoph-2021-0242
MLA:
Dienstbier, Philip, Timo Paschen, and Peter Hommelhoff. "Coherent control at gold needle tips approaching the strong-field regime." Nanophotonics 10 (2021): 3717–3721.
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