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URN to cite this document: urn:nbn:de:bvb:703-epub-6032-1
Title data
Heindl, Moritz ; Kirkwood, Nicholas ; Lauster, Tobias ; Lang, Julia ; Retsch, Markus ; Mulvaney, Paul ; Herink, Georg:
Ultrafast imaging of terahertz electric waveforms using quantum dots.
In: Light : Science and Applications.
Vol. 11
(1 January 2022)
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- No. 5.
ISSN 2047-7538
DOI der Verlagsversion: https://doi.org/10.1038/s41377-021-00693-5
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Project information
| Project title: |
Project's official title Project's id Open Access Publizieren No information |
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| Project financing: |
Deutsche Forschungsgemeinschaft |
Abstract
Microscopic electric fields govern the majority of elementary excitations in condensed matter and drive electronics at frequencies approaching the Terahertz (THz) regime. However, only few imaging schemes are able to resolve subwavelength fields in the THz range, such as scanning-probe techniques, electro-optic sampling, and ultrafast electron microscopy. Still, intrinsic constraints on sample geometry, acquisition speed and field strength limit their applicability. Here, we harness the quantum-confined Stark-effect to encode ultrafast electric near-fields into colloidal quantum dot luminescence. Our approach, termed Quantum-probe Field Microscopy (QFIM), combines far-field imaging of visible photons with phase-resolved sampling of electric waveforms. By capturing ultrafast movies, we spatio-temporally resolve a Terahertz resonance inside a bowtie antenna and unveil the propagation of a Terahertz waveguide excitation deeply in the sub-wavelength regime. The demonstrated QFIM approach is compatible with strong-field excitation and sub-micrometer resolution—introducing a direct route towards ultrafast field imaging of complex nanodevices inoperando.
Further data
| Item Type: | Article in a journal |
|---|---|
| Keywords: | Nanophotonics and plasmonics; Quantum dots |
| DDC Subjects: | 500 Science > 530 Physics |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Professor Experimental Physics VIII - Ultrafast Dynamics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Professor Experimental Physics VIII - Ultrafast Dynamics > Professor Experimental Physics VIII - Ultrafast Dynamics - Univ.-Prof. Dr. Georg Herink Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-6032-1 |
| Date Deposited: | 14 Mar 2022 06:02 |
| Last Modified: | 14 Mar 2022 06:11 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/6032 |
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