Quantum-probe Field Microscope (QFIM) films THz-Nearfield Evolutions

We demonstrate a novel ultrafast electric field microscopy for sub-wavelength and sub-cycle imaging of nearfield waveforms at THz frequencies. Based on the fluorescence of semiconductor quantum-dots as local field probes, we acquire ultrafast movies of dynamic electric field evolutions inside broadb...

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Bibliographic Details
Main Authors: Heindl, Moritz B., Kirkwood, Nicholas, Lauster, Tobias, Lang, Julia A., Retsch, Markus, Mulvaney, Paul, Herink, Georg
Format: Conference Proceeding
Language:English
Subjects:
Electric fields
Microscopy
Optical microscopy
Quantum dots
Semiconductor waveguides
Spectroscopy
Ultrafast optics
Online Access:Request full text
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Summary:We demonstrate a novel ultrafast electric field microscopy for sub-wavelength and sub-cycle imaging of nearfield waveforms at THz frequencies. Based on the fluorescence of semiconductor quantum-dots as local field probes, we acquire ultrafast movies of dynamic electric field evolutions inside broadband THz-antennas and of propagating THz-excitations in metallic waveguides using an optical microscope. This flexible scheme allows for local time-domain spectroscopy more than 100x below the diffraction limit and provides field-resolved access to field-driven and strong-field dynamics inside active metamaterials.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz50927.2022.9895775