SKM 2023 – scientific programme
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O: Fachverband Oberflächenphysik
O 49: Plasmonics and Nanooptics I: Fabrication and Application
O 49.2: Talk
Wednesday, March 29, 2023, 10:45–11:00, WIL A317
Sampling polar THz nearfields using nonpolar Stark-effect — •Moritz B. Heindl1, Nicholas Kirkwood2, Tobias Lauster3, Markus Retsch3, Paul Mulvaney2, and Georg Herink1 — 1Experimental Physics VIII, University of Bayreuth, Germany — 2ARC Centre of Excellence in Exciton Science, School of Chemistry, University of Melbourne, Australia — 3Physical Chemistry I, University of Bayreuth, Germany
Quantum-Probe Field Microscopy (QFIM) enables the imaging of ultrafast THz nearfield waveforms with a conventional fluorescence microscope at optical resolution [1]. Although the underlying quantum-confined Stark-effect scales quadratically in typical configurations, we are able to resolve the full polarity of the THz nearfields utilizing alternative approaches. Specifically, we employ a carrier-envelope phase shift of the driving THz waveform or external biasing of the THz nearfield, as we discuss in this contribution.
[1] Heindl, M. B. et al. Light Sci. Appl. 11, 5 (2022)